Provided by: cdrskin_1.3.4-0ubuntu1_amd64 bug

NAME

       cdrskin - burns preformatted data to CD, DVD, and BD via libburn.

SYNOPSIS

       cdrskin [options|track_source_addresses]

DESCRIPTION

       cdrskin  is  a program that provides some of cdrecord's options in a compatible way for CD
       media. With DVD and BD it has its own ways.  You do not need to be superuser for its daily
       usage.

   Overview of features:
       Blanking of CD-RW and DVD-RW.
       Formatting of DVD-RW, DVD+RW, DVD-RAM, BD.
       Burning of data tracks or audio tracks with CD-TEXT to CD,
       either in versatile Track at Once mode (TAO)
       or in Session at Once mode for seamless tracks.
       Multi session on CD (follow-up sessions in TAO only)
       or on DVD-R[W] (in Incremental mode) or DVD+R[/DL] or BD-R.
       Single session Disk-at-once on DVD-RW, DVD-R, DVD-R DL.
       Single session or emulated ISO-9660 multi-session
       on overwriteable DVD+RW, DVD-RW, DVD-RAM, BD-RE
       or on data file or block device.
       Extraction of audio tracks and CD-TEXT to hard disk files.
       Bus scan, burnfree, speed options, retrieving media info, padding, fifo.
       See section EXAMPLES at the end of this text.

   General information paragraphs:
       Track recording model
       Write mode selection
       Recordable CD Media
       Sequentially Recordable DVD or BD Media
       Overwriteable DVD or BD Media
       Drive preparation and addressing
       Emulated drives

   Track recording model:
       The  input-output entities which get processed are called tracks.  A track stores a stream
       of bytes.
       More than one track can be burned by a single run of cdrskin.  In the  terms  of  the  MMC
       standard all tracks written by the same run constitute a session.
       Normally,  each  track is initiated by one track source address argument, which may either
       be "-" for standard input or the  address  of  a  readable  file.   Alternatively,  option
       cuefile=  may  be  used  to  read  a  session description from a text file and to read the
       session content from a single data file.
       If no write  mode  is  given  explicitly  then  one  will  be  chosen  which  matches  the
       peculiarities of track sources and the state of the output media.

       Some  media  types can be kept appendable so that further tracks can be written to them in
       subsequent runs of cdrskin (see option -multi).  Info about the addresses of burned tracks
       is kept in a table of content (TOC) on media and can be retrieved via cdrskin option -toc.
       This information is also used by the operating systems' CD-ROM read drivers.

       In general there are two types of tracks: data and audio.  They  differ  in  sector  size,
       throughput and readability via the systems' CD-ROM drivers resp. by music CD players. With
       DVD and BD there is only type data.
       If not explicitly option -audio is given, then any track is burned as  type  data,  unless
       the  track  source  is  a  file  with  suffix  ".wav" or ".au" and has a header part which
       identifies it as MS-WAVE resp. SUN Audio with suitable parameters. Such files  are  burned
       as audio tracks by default.

       While  audio tracks just contain a given time span of acoustic vibrations, data tracks may
       have an arbitray meaning. Nevertheless, ISO-9660 filesystems are established as  a  format
       which  can  represent a tree of directories and files on all major operating systems. Such
       filesystem images can be produced by programs mkisofs or genisoimage or xorriso.  They can
       also  be  extended  by  follow-up  tracks if prepared properly.  See the man pages of said
       programs.  cdrskin is able to fulfill the needs about their option -C.
       Another type of data  track  content  are  archive  formats  which  originally  have  been
       developed for magnetic tapes. Only formats which mark a detectable end-of-archive in their
       data are suitable, though. Well tested are the archivers afio and star. Not suitable seems
       GNU tar.

   Write mode selection:
       In general there are two approaches for writing media:
       A  permissive  mode depicted by option -tao which needs no predicted track size and allows
       to make use of eventual multi-session capabilities.
       A more restrictive mode -sao (alias -dao) which usually demands a predictable  track  size
       and is not necessarily capable of multi-session. It can be used to write CD-TEXT and it is
       the only one that works with option cuefile=.
       If none of the options -dao, -tao or -sao is given then the program will try to  choose  a
       write  mode which matches the defined recording job, the capabilities of the drive and the
       state of the present media.
       So the mentioning of write modes in the following paragraphs and in the examples is not so
       much  a  demand  that  the user shall choose one explicitly, but rather an illustration of
       what to expect with particular media types.

   Recordable CD Media:
       CD-R can be initially written only once and eventually extended until they get closed  (or
       are  spoiled because they are overly full). After that they are read-only. Closing is done
       automatically unless option -multi is given which keeps the media appendable.
       Write mode -tao allows to use track sources  of  unpredictable  length  (like  stdin)  and
       allows  to  write further sessions to appendable media.  -sao produces audio sessions with
       seamless tracks but needs predicted track sizes and cannot append sessions to media.
       CD-RW media can be blanked to make  them  re-usable  for  another  round  of  overwriting.
       Usually  blank=fast  is the appropriate option.  Blanking damages the previous content but
       does not make it completely unreadable. It is no effective privacy  precaution.   Multiple
       cycles of blanking and overwriting with random numbers might be needed.

   Sequentially Recordable DVD or BD Media:
       Currently  DVD-RW, DVD-R[DL], DVD+R[DL], and BD-R can be used for the Sequential recording
       model. It resembles the model of CD media. Only DVD-RW can be  blanked  and  re-used  from
       scratch.
       DVD-RW  are  sequential media if they are in state "Sequential Recording".  The media must
       be either blank or appendable.  Newly purchased DVD-RW and DVD-R media are in this  state.
       Used DVD-RW get into blank sequential state by option blank=deformat_sequential .
       With DVD-R[W] two write modes may be available:
       Mode  DAO  has many restrictions. It does not work with appendable media, allows no -multi
       and only a single track. The size of the track needs to be known in advance. So either its
       source  has  to  be  a  disk  file  of  recognizable  size or the size has to be announced
       explicitly by options tsize= or tao_to_sao_tsize= .
       DAO is the only mode for DVD-R media which do not offer feature 21h Incremental  Streaming
       (e.g.  DVD-R  DL). DAO may also be selected explicitly by option -sao .  Program growisofs
       uses DAO on sequential DVD-R[W] media for maximum DVD-ROM/-Video compatibility.
       The other mode, Incremental Streaming, is the default write mode if it is available and if
       the  restrictions  of  DAO  would  prevent the job.  Incremental Streaming may be selected
       explicitly by option -tao as it resembles  much  CD  TAO  by  allowing  track  sources  of
       unpredicted  length  and to keep media appendable by option -multi . It does not work with
       DVD-R DL and minimally blanked DVD-RW.  The only restriction towards CD-R[W] is  the  lack
       of support for -audio tracks.  Multiple tracks per session are permissible.
       The  write  modes for DVD+R[/DL] and BD-R resemble those with DVD-R except that each track
       gets wrapped in an own session. There is no -dummy writing with DVD+R[/DL] or BD-R.
       Quite deliberately write mode -sao insists in the tradition of a predicted track size  and
       blank media, whereas -tao writes the tracks open ended and allows appendable media.
       BD-R  may  be formatted before first use to enable the Defect Management which might catch
       and repair some bad spots at the expense of slow speed even with flawless media.
       Note: Option -multi might make DVD media unreadable in some DVD-ROM drives.   Best  reader
       compatibility is achieved without it (i.e. by single session media).

   Overwriteable DVD or BD Media:
       Currently types DVD+RW, DVD-RW, DVD-RAM and BD-RE can be overwritten via cdrskin.
       Option  -audio  is  not  allowed.  Only one track is allowed.  Option -multi cannot mark a
       recognizable end of overwriteable media.   Therefore  -multi  is  banned  unless  ISO-9660
       images  shall  be  expandable  by  help of option --grow_overwriteable_iso .  Without this
       option or without an ISO-9660 filesystem image present on  media,  -toc  does  not  return
       information  about the media content and media get treated as blank regardless wether they
       hold data or not.
       Currently there is no difference between -sao and -tao. If ever, then  -tao  will  be  the
       mode which preserves the current behavior.

       DVD+RW  and  DVD-RAM  media  need  no  special  initial  formatting.  They  offer a single
       continuous data area for blockwise random access. BD-RE need  explicit  formatting  before
       use. See blank=as_needed or blank=format_defectmgt .
       DVD-RW  are sold in state "Sequential Recording". To become suitable for the Overwriteable
       DVD recording model they need to get formatted to state "Restricted Overwrite". Then  they
       behave much like DVD+RW. This formatting can be done by option blank=format_overwrite .
       Several programs like dvd+rw-format, cdrecord, wodim, or cdrskin can bring a DVD-RW out of
       overwriteable state so that it has to be formatted again. If in doubt, just give it a try.

   Drive preparation and addressing:
       The drives, CD, DVD, or BD burners, are accessed  via  addresses  which  are  specific  to
       libburn and the operating system. Those addresses get listed by a run of cdrskin --devices
       or cdrskin --device_links.
       On Linux, they are device files which traditionally do not offer w-permissions for  normal
       users.  Because libburn needs rw-permission, it might be only the superuser who is able to
       get this list without further precautions.
       It is consensus that chmod a+rw /dev/sr0 or chmod a+rw /dev/hdc is less security sensitive
       than  chmod  u+s,a+x  /usr/bin/cdrskin.  The risk for the drive is somewhat higher but the
       overall system is much less at stake.  Consider to restrict rw-access to  a  single  group
       which bundles the users who are allowed to use the burner drive (like group "floppy").
       For drive permission examples on Linux, FreeBSD, and Solaris, see cdrskin/README.

       If  you only got one CD capable drive then you may leave out cdrskin option dev=. Else you
       should use this option to address the drive you want.
       cdrskin option dev= not only accepts the listed addresses but  also  traditional  cdrecord
       SCSI  addresses  which  consist of three numbers: Bus,Target,Lun. On Linux there is also a
       related address family "ATA" which accesses IDE drives not under  control  of  Linux  SCSI
       drivers: ATA:Bus,Target,Lun.
       See option -scanbus for getting a list of cdrecord style addresses.
       Further  are accepted: links to libburn-suitable device files, device files which have the
       same major and minor device number, and device files which  have  the  same  SCSI  address
       parameters (e.g. /dev/sg0).

   Emulated drives:
       Option  --allow_emulated_drives  enables addressing of pseudo-drives which get emulated on
       top of filesystem objects. Regular data files and block devices  result  in  pseudo-drives
       which behave much like DVD-RAM.  If the given address does not exist yet but its directory
       exists, then it gets created as regular file.  Other file types like character devices  or
       pipes result in pseudo-drives which behave much like blank DVD-R.  The target file address
       is given after prefix "stdio:".
       E.g.: dev=stdio:/tmp/my_pseudo_drive
       Addresses of the form "stdio:/dev/fd/<number>" are treated special.  The  number  is  read
       literally and used as open file descriptor. With dev="stdio:/dev/fd/1" the normal standard
       output of the program is redirected to stderr and the stream  data  of  a  burn  run  will
       appear on stdout.
       Not good for terminals ! Redirect it.
       Pseudo-drives  allow  -dummy.  Their  reply with --tell_media_space can be utopic.  -dummy
       burn runs touch the file but do not modify its data content.
       Note: --allow_emulated_drives is restricted to stdio:/dev/null if cdrskin is  run  by  the
       superuser or if it has changed user identity via the setuid bit of its access permissions.
       The ban for the superuser can be lifted by a skillfully created file.  See  section  FILES
       below.

OPTIONS

       --help Show non-cdrecord compatible options.

       -help  Show cdrecord compatible options.
              Note  that  some  of  the  help texts are quite wrong - for cdrecord as well as for
              cdrskin  (e.g.  -format,  blank=,  -load).  They  are,  nevertheless,   traditional
              indicators  for the availability of the listed options. Some frontend programs make
              decisions after reading them.

       -version
              Print cdrskin id line, compatibility lure line, libburn version,  cdrskin  version,
              version timestamp, build timestamp (if available), and then exit.

       Alphabetical list of options which are intended to be compatible with original cdrecord by
       Joerg Schilling:

       -atip  Retrieve some info about media state. With CD-RW print  "Is  erasable".   With  DVD
              media  print  "book  type:"  and  a  media  type text. With BD media print "Mounted
              Media:" and media type text.

       -audio Announces that the subsequent tracks are to be burned  as  audio.   The  source  is
              supposed  to  be uncompressed headerless PCM, 44100 Hz, 16 bit, stereo. For little-
              endian byte order  (which  is  usual  on  PCs)  use  option  -swab.  Unless  marked
              explicitly by option -data, input files with suffix ".wav" are examined wether they
              have a header in MS-WAVE format confirming  those  parameters  and  eventually  raw
              audio  data  get extracted and burned as audio track. Same is done for suffix ".au"
              and SUN Audio.
              Option -audio may be used only with CD media and not with DVD or BD.

       blank=type
              Blank a CD-RW, DVD-RW, or format a DVD-RW, DVD+RW, DVD-RAM, BD.  This is combinable
              with  burning  in  the same run of cdrskin.  The type given with blank= selects the
              particular behavior:

              as_needed
                     Try to  make  the  media  ready  for  writing  from  scratch.  If  it  needs
                     formatting,  then  format  it.  If  it  is  not  blank,  then  try  to apply
                     blank=fast.  It is a reason to abort if the media cannot  assume  thoroughly
                     writeable state, e.g. if it is non-blank write-once.
                     This  leaves unformatted DVD-RW in unformatted blank state. To format DVD-RW
                     use blank=format_overwriteable. Blank unformatted BD-R stay unformatted.
                     (Note: blank=as_needed is not an original cdrecord option.)

              The following blank types are specific to particular media  familes.  Use  them  if
              special features are desired.

              all    Blank   an   entire   CD-RW   or   an   unformatted   DVD-RW.    (See   also
                     --prodvd_cli_compatible, --grow_overwriteable_iso)

              fast   Minimally blank an entire CD-RW or blank an unformatted DVD-RW.   (See  also
                     --prodvd_cli_compatible, --grow_overwriteable_iso)

              deformat_sequential
                     Like  blank=all  but with the additional ability to blank overwriteable DVD-
                     RW.   This  will  destroy  their  formatting  and  make  them   sequentially
                     recordable.   Another peculiarity is the ability to blank media which appear
                     already blank.  This is similar to option -force but does not try  to  blank
                     media other than recognizable CD-RW and DVD-RW.
                     (Note: blank=deformat_* are not original cdrecord options.)

              deformat_sequential_quickest
                     Like  blank=deformat_sequential but blanking DVD-RW only minimally.  This is
                     faster than full blanking but  may  yield  media  incapable  of  Incremental
                     Streaming (-tao).

              format_if_needed
                     Format  a  media  if  it  is  not  formatted  yet,  and  if cdrskin supports
                     formatting  for  the  media  type,  and  if  formatting  will   not   happen
                     automatically  during  write.  This currently applies to unformatted DVD-RW,
                     DVD-RAM, BD-RE, and blank  unformatted  BD-R.   Eventually  the  appropriate
                     default formatting is chosen.  If other media or states are encountered then
                     nothing happens.
                     The following formatting types are  more  specialized  to  particular  media
                     families.

              format_overwrite
                     Format  a  DVD-RW  to  "Restricted  Overwrite".  The  user should bring some
                     patience.
                     (Note: blank=format_* are not original cdrecord options.)

              format_overwrite_quickest
                     Like format_overwrite without creating a 128 MiB trailblazer session.  Leads
                     to  "intermediate"  state  which only allows sequential write beginning from
                     address 0.  The "intermediate" state ends after the first session of writing
                     data.

              format_overwrite_full
                     For  DVD-RW  this is like format_overwrite but claims full media size rather
                     than just 128 MiB.  Most traditional formatting is attempted.  No  data  get
                     written.  Much patience is required.
                     This  option  treats  already  formatted  media even if not option -force is
                     given.
                     For DVD+RW this is the only supported explicit formatting type. It  provides
                     complete "de-icing" so no reader slips on unwritten data areas.

              format_defectmgt
                     Format  DVD-RAM  or  BD  to  reserve  the default amount of spare blocks for
                     defect management.
                     The  following  format_defectmgt_*  allow  to  submit  user   wishes   which
                     nevertheless  have  to match one of the available formats. These formats are
                     offered by the drive after examining the media.

              format_defectmgt_cert_off
                     Disable the usual media quality certification in  order  to  save  time  and
                     format  to  default  size.   The  certification  setting  persists  even  if
                     subsequent blank= options override the size of the format selection.
                     Whether formatting without certification works properly depends much on  the
                     drive. One should check the "Format status:" from --list_formats afterwards.

              format_defectmgt_cert_on
                     Re-enable  the usual media quality certification and format to default size.
                     The certification setting persists like with format_defectmgt_cert_off.
                     Whether there happens certification at all depends much on the  media  state
                     and the actually selected format descriptor.

              format_defectmgt_max
                     Format DVD-RAM or BD to reserve a maximum number of spare blocks.

              format_defectmgt_min
                     Format  DVD-RAM or BD to reserve a minimum number of spare blocks.  It might
                     be necessary to format format_defectmgt_none first in order to  get  offered
                     the most minmal spare blocks sizes for format_defectmgt_min.

              format_defectmgt_none
                     Format  DVD-RAM  or  BD-RE  to  the largest available payload in the hope to
                     disable defect management  at  all.  This  may  or  may  not  have  a  speed
                     increasing effect.  Unformatted blank BD-R will be left unformatted.

              format_defectmgt_payload_<size>
                     Format  DVD-RAM  or  BD.  The text after "format_defectmgt_payload_" gives a
                     number of bytes, eventually with suffixes "s", "k", "m". The largest  number
                     of spare blocks will be chosen which allows at least the given payload size.

              format_by_index_<number>
                     Format  DVD-RW,  DVD+RW, DVD-RAM or BD.  The number after "format_by_index_"
                     is used as index to the list of available format descriptors. This list  can
                     be  obtained  by option --list_formats.  The numbers after text "Format idx"
                     are the ones to be used with format_by_index_. Format descriptor  lists  are
                     volatile.  Do  neither  eject  nor  write  the  media  between  the  run  of
                     --list_formats and the run of blank=format_by_index_ or else you may  get  a
                     different format than desired.

              help   Print this list of blanking types.

       -checkdrive
              Retrieve  some  info  about the addressed drive and then exit.  Exits with non-zero
              value if the drive cannot be found and opened.

       -copy  Create the subsequent tracks with permission for an unlimited number of copies.

       cuefile=path
              Read a session description from a cue sheet file in CDRWIN format.  Base the tracks
              on  a  single  file which is given in the sheet by command FILE.  To enable CD-TEXT
              from the cue sheet file, cdrskin option -text has to be present.
              cdrskin currently supports TRACK datatypes AUDIO and MODE1/2048 which  may  not  be
              mixed.  Data source may be of FILE type BINARY, MOTOROLA, or WAVE.
              Non-CDRWIN commands ARRANGER, COMPOSER, MESSAGE are supported.
              Cue  sheet  file  commands CATALOG and ISRC may be overridden by option mcn= and by
              input_sheet_v07t= purpose specifiers "UPC / EAN" and "ISRC".  This does not  affect
              their appearance in CD-TEXT, but only on Q sub-channel.
              The track numbers may be overridden by option cd_start_tno=.

       -dao   Alias for option -sao. Write CD in Session at Once mode or DVD-R[W] in Disc-at-once
              mode.

       -data  Subsequent tracks are data tracks. This option is default and only needed  to  mark
              the end of the range of an eventual option -audio or -xa1.
              Options  -mode2, -xa, and -xa2 get mapped to -data, not using the desired CD sector
              formats and thus not taking advantage of eventual higher payload.  -xa1  Subsequent
              tracks  are  data  tracks  with  input  suitable  for CD-ROM XA mode 2 form 1. This
              differs from -data input by 8 additional header bytes per block.  cdrskin will  not
              write CD-ROM XA but rather strip the header bytes and write as -data tracks.

       dev=target
              Set  the  address of the drive to use. Valid are at least the addresses listed with
              options --devices or --device_links, X,Y,Z addresses listed with  option  -scanbus,
              ATA:X,Y,Z  addresses  listed  with  options  dev=ATA -scanbus, and volatile libburn
              drive numbers (numbering starts at "0").  Other device file addresses which lead to
              the same drive might work too.
              If  no  dev= is given, volatile address "dev=0" is assumed. That is the first drive
              found being available. Better avoid this ambiguity on systems with  more  than  one
              drive.
              The special target "help" lists hints about available addressing formats.  Be aware
              that  deprecated  option  --old_pseudo_scsi_adr   may   change   the   meaning   of
              Bus,Target,Lun addresses.

       driveropts=opt
              Set  "driveropts=noburnfree"  to  disable the drive's eventual protection mechanism
              against temporary lack of  source  data  (i.e.  buffer  underrun).   A  drive  that
              announces  no such capabilities will not get them enabled anyway, even if attempted
              explicitly via "driveropts=burnfree".

       -dummy Try to perform the drive operations without actually affecting the inserted  media.
              There  is  no  warranty that this will work with a particular combination of drive,
              media, and write mode. Blanking is prevented reliably, though.  To avoid inadverted
              real  burning,  -dummy  refuses  burn  runs  on  anything but CD-R[W], DVD-R[W], or
              emulated stdio-drives.

       -eject Eject the disc after work is done.

       -force Assume that the user knows  better  in  situations  when  cdrskin  or  libburn  are
              insecure about drive or media state. This includes the attempt to blank media which
              are classified as unknown or unsuitable, and the attempt to use write  modes  which
              libburn believes they are not supported by the drive.
              Another  application  is to enforce blanking or re-formatting of media which appear
              to be in the desired blank or format state already.
              This option enables a burn run with option -dummy even  if  libburn  believes  that
              drive and media will not simulate the write mode but will write for real.
              It enables a burn run where cdrskin expects to exceed the available media capacity.
              Caution: Use this only when in urgent need.

       -format
              Same as blank=format_overwrite_full -force but restricted to DVD+RW.

       fs=size
              Set  the  fifo  size  to the given value. The value may have appended letters which
              multiply the preceding number:
              "k" or "K" = 1024 , "m" or "M" = 1024k , "g" or "G" = 1024m , "s" or "S" = 2048
              Set size to 0 in order to disable the fifo (default is "4m").
              The fifo buffers an eventual temporary surplus of track source  data  in  order  to
              provide  the  drive  with  a  steady stream during times of temporary lack of track
              source supply.  The larger the fifo, the longer periods of poor source  supply  can
              be  compensated.   But a large fifo needs substantial time to fill up if not curbed
              via option fifo_start_at=size.

       gracetime=seconds
              Set the grace time before starting to write. (Default is 0)

       -immed Equivalent to:
              modesty_on_drive=1:min_percent=75:max_percent=95
              The name of this cdrecord option stems from the "Immed" bit  which  can  make  some
              long  running  drive  commands  asynchronous and thus eases the load on some wiring
              hardware types. Regardless of option -immed,  cdrskin  uses  asynchronous  commands
              where possible and appropriate.

       index=list
              Set a comma separated list of index start address numbers for the next track.  This
              applies to CD SAO sessions only.
              The addresses count sectors from the start of the next track. The first  number  is
              for  index  1  and  must  be  0. The following numbers have to be larger than their
              respective predecessors. Up to 99 numbers are allowed.
              Sector numbers are computed from Min:Sec:Frame addresses by
               Sector = ((Min*60)+Sec)*75+Frame
              E.g.: "0,7512,20408" sets index 2 to 01:40:12 and index 3 to 04:32:08.

       -inq   Print the identification of the drive and then exit.

       -isosize
              The next track following this option will try to obtain its source  size  from  the
              header information out of the first few blocks of the source data.  If these blocks
              indicate an ISO-9660 filesystem then its declared  size  will  be  used  under  the
              assumption that it is a single session filesystem.
              If not, then the burn run will be aborted.
              The  range  of  -isosize  is  exactly  one track. Further tracks may be preceded by
              further -isosize options, though. At least 15 blocks of padding will  be  added  to
              each -isosize track. But be advised to rather use padsize=300k.
              This  option  can  be  performed  on track sources which are regular files or block
              devices. For the first track of the session it can be  performed  on  any  type  of
              source if there is a fifo of at least 64 kiB. See option fs= .

       isrc=text
              Set  the ISRC for the next track source to the given text, which must be exactly 13
              characters long. It must comply to the format CCOOOYYSSSSS.
              CC is the country code. OOO is the owner code. Both may consist of capital  letters
              A  to Z and of decimal digits 0 to 9. YY depicts the year (00 to 99).  SSSSS is the
              serial number (00000 to 99999).
              This option does not affect CD-TEXT but only the Q sub-channel.

       -load  Load the media and exit. Exit value is 0 if any kind of media was found,  non  zero
              else. Note: Option -eject will unload the media even if -load is given.

       -lock  Like option -load but leave the drive's eject button disabled if there is any media
              found and not option -eject is given.
              Use program "eject" or cdrskin -eject to get the tray out of the  drive.   Runs  of
              programs like cdrecord, growisofs, wodim, cdrskin will not be hampered and normally
              enable the drive's eject button when they are done.

       mcn=text
              Set the CD Media Catalog Number to text, which must be exactly 13  characters  long
              and should consist of decimal digits.
              This option does not affect CD-TEXT but only the Q sub-channel.

       minbuf=percentage
              Equivalent to:
              modesty_on_drive=1:min_percent=<percentage>:max_percent=95
              Percentage is permissible between 25 and 95.

       -minfo Print  information  about  the  loaded media. This includes media type, writability
              state, and a quite readable table of content.

       msifile=path
              Run option -msinfo and copy the result line into the file given  by  path.   Unlike
              -msinfo  this option does not redirect all normal output away from standard output.
              But it may be combined with -msinfo to achieve this.
              Note: msifile=path is actually an option of wodim and not of cdrecord.

       -msinfo
              Retrieve multi-session info for preparing a  follow-up  session  by  option  -C  of
              programs  mkisofs,  genisoimage,  or xorriso -as mkisofs.  Print result to standard
              output.  This option redirects to stderr all  message  output  except  the  one  of
              option --tell_media_space and its own result string, which consists of two numbers.
              The result string shall be used as argument of option -C with  said  programs.   It
              gives  the start address of the most recent session and the predicted start address
              of the next session to be appended. The string is empty if the most recent  session
              was not written with option -multi.
              To  have  a  chance  for  working  on  overwriteable  media,  this option has to be
              accompanied by option --grow_overwriteable_iso.

       -multi This option keeps CD, unformatted DVD-R[W], DVD+R, or  BD-R  appendable  after  the
              current  session  has been written.  Without it the disc gets closed and may not be
              written any more  - unless it is a -RW and gets blanked which causes  loss  of  its
              content.
              The  following sessions can only be written in -tao mode. -multi is prohibited with
              DVD-R[W] DAO write mode and on  DVD-R  DL  media.   Option  --prodvd_cli_compatible
              eventually makes -multi tolerable but cannot make it work.
              In  order  to  have  all  filesystem  content  accessible,  the  eventual  ISO-9660
              filesystem of a follow-up session needs to be prepared in  a  special  way  by  the
              filesystem  formatter program. mkisofs and genisoimage expect particular info about
              the situation which can be retrieved by cdrskin option -msinfo.
              To retrieve an archive file which was written as follow-up  session,  you  may  use
              option  -toc to learn about the "lba" of the desired track number.  This lba is the
              address of the 2048 byte block where the archive begins.
              With overwriteable DVD or BD media, -multi cannot mark the end of the session.   So
              when  adding  a  new  session  this  end  has  to  be  determined from the payload.
              Currently  only  ISO-9660  filesystems  can  be   used   that   way.   See   option
              --grow_overwriteable_iso for lifting the ban on -multi.
              Note: -multi might make DVD media unreadable in some DVD-ROM drives.

       -nocopy
              Create  subsequent tracks with permission for a single level of copies.  I.e. those
              copies would then be marked by -scms as offering no permission for further copies.

       -nopad Do not add trailing zeros to the data stream. Nevertheless, since there seems to be
              no  use  for  audio tracks with incomplete last sector, this option applies only to
              data tracks. There it is default.

       -nopreemp
              Indicate for subsequent tracks that they were mastered without pre-emphasis.

       -pad   Add 30 kiB of trailing zeros to each data track. (This is not sufficient  to  avoid
              problems with various CD-ROM read drivers.)

       padsize=size
              Add  the  given  amount  of trailing zeros to the next data track. This option gets
              reset to padsize=0 after that next track is written. It may be set again before the
              next track argument. About size specifiers, see option fs=.

       -preemp
              Indicate for subsequent tracks that they were mastered with pre-emphasis.

       -sao   Write CD in Session At Once mode or sequential DVD-R[W] in Disc-at-once (DAO) mode.
              With  CD  this  mode is able to put several audio tracks on media without producing
              audible gaps between them.
              With DVD-R[W] this mode can only write a single track.  No -multi is  allowed  with
              DVD-R[W] -sao.
              -sao  is permissible with overwriteable DVD, or DVD+R[/DL], or BD but actually only
              imposes restrictions without providing known advantages.
              -sao can only be used for tracks of fixely predicted size. This implies that  track
              arguments which depict stdin or named pipes need to be preceded by option tsize= or
              by option tao_to_sao_tsize=.
              -sao cannot be used on appendable media.

       -scanbus
              Scan the system for drives. On Linux the drives at /dev/s* and at /dev/hd*  are  to
              be  scanned by two separate runs. One without dev= for /dev/s* and one with dev=ATA
              for /dev/hd* devices. (Option --drives lists all available drives in a single run.)
              Drives which are busy or which offer no rw-permission to the user  of  cdrskin  are
              not listed. Busy drives get reported in form of warning messages.
              The useful fields in a result line are:
              Bus,Target,Lun Number) 'Vendor' 'Mode' 'Revision'

       -scms  Create  subsequent tracks without permission for being copied. This is usually done
              for tracks which are copies of tracks that were marked with -nocopy  (but  not  yet
              with -scms). So copies of copies are prohibited.
              This  option  gets  reset by option -copy. Thus the combination -copy -nocopy means
              -nocopy surely without -scms.

       speed=number
              Set speed of drive. With data CD, 1x speed corresponds to a throughput  of  150,000
              bytes/second.  With  DVD,  1x  =  1,385,000  bytes/second.   With BD 1x = 4,495,625
              bytes/second.  It is not an error to set a speed higher than is suitable for  drive
              and  media.  One should stay within a realistic speed range, though.  Special speed
              settings are:
              0 = minimal speed , -1 = maximal speed (default), text "any" = like -1.

       -swab  Announce that the raw audio data source of subsequent tracks is byte swapped versus
              the  expectations  of  cdrecord.  This option is suitable for audio where the least
              significant byte of a 16 bit word is first (little-endian, Intel).  Most raw  audio
              data  on  PC systems are available in this byte order.  Less guesswork is needed if
              track sources are in format MS-WAVE in a file with suffix ".wav".

       -tao   Write CD in Track At Once (TAO) mode, sequential DVD-R[W] in Incremental  Streaming
              mode,  or DVD+R[/DL] without traditional -sao restrictions.  This mode also applies
              pro-forma to overwriteable media
              Mode -tao can be used with track sources of unpredictable size, like standard input
              or named pipes. It is also the only mode that can be used for writing to appendable
              media which already hold data. With unformatted DVD-R[W] it is the only mode  which
              allows -multi.
              Mode -tao is not usable for minimally blanked DVD-RW and for DVD-R DL.

       -text  Enable  writing  of  CD-TEXT  attributes  read  by option cuefile=.  Without option
              -text, cue sheet file command CDTEXTFILE will be ignored and no CD-TEXT  attributes
              will  be  read  from  the  file.  Nevertheless, CATALOG and ISRC will have the same
              effect as options mcn= and isrc=.

       textfile=path
              Read CD-TEXT packs from the file depicted by path and put them into the Lead-in  of
              the emerging session. This session has to be done by Session At Once (SAO) mode and
              may only contain audio tracks.
              path must lead to a regular file, which consists of  an  optional  header  of  four
              bytes  and  one  or  more  text  packs of 18 bytes each. Suitable would be the file
              'cdtext.dat' which gets extracted from CD media by options -vv -toc  and  shown  in
              human readable form by -vvv -toc.
              The  header,  if present, must tell the file size minus 2, encoded as big-endian 16
              bit word. The other two bytes must be 0.
              If there is no 4-byte header, then a trailing 0-byte, as of Sony specification,  is
              tolerated and ignored.
              A  text  pack  consists of a pack type byte, a track number byte, a counter byte, a
              Block Number and Character Indicator byte, 12 text characters or  data  bytes,  two
              optional CRC bytes. For details see libburn documentation file doc/cdtext.txt.
              By  default,  the input file is checked for correct CRC bytes. If all CRC bytes are
              0, then the correct values get silently inserted. If there are non-zero CRC  bytes,
              then  a  mismatch  causes the abort of the burn run.  This check can be disabled by
              option -force.
              Note that this option overrides option input_sheet_v07t= .

       -toc   Print the table of content (TOC) which describes the tracks recorded on disc.   The
              output  contains  all  info from option -atip plus lines which begin with "track:",
              the track number, the word "lba:" and a number which gives the start address of the
              track.  Addresses  are counted in CD sectors which with SAO or TAO data tracks hold
              2048 bytes each.
              If verbosity is set to level 2 (-v -v) then the CD-TEXT packs from the  lead-in  of
              an audio CD get extracted and written into file 'cdtext.dat', if that file does not
              yet exist. Prepended is a 4 byte header, followed by one or more packs of 18  bytes
              each.
              Verbosity level 3 causes the CD-TEXT packs to be printed as hex numbers to standard
              output. Bytes 4 to 15 of certain pack types are printed as ASCII characters if they
              have values in the range of 32 to 126.
              See option textfile= for more information about the text pack format.

              Example. Retrieve an afio archive from track number 2:
                     tracknumber=2
                     lba=$(cdrskin dev=/dev/cdrom -toc 2>&1 | \
                     grep '^track:[ ]*[ 0-9][0-9]' | \
                     tail +"$tracknumber" | head -1 | \
                     awk '{ print $4}' )
                     dd if=/dev/cdrom bs=2048 skip="$lba" | \
                     afio -t - | less

       tsize=size
              Announces the exact size of the next track source. This is necessary with any write
              mode other than -tao if the track source is not a regular disk file, but  e.g.  "-"
              (standard input) or a named pipe.  About size specifiers, see option fs=.
              If  the  track source does not deliver the predicted amount of bytes, the remainder
              of the track is padded with zeros. This is not considered  an  error.   If  on  the
              other  hand  the track source delivers more than the announced bytes then the track
              on media gets truncated to the predicted  size  and  cdrskin  exits  with  non-zero
              value.

       -v     Increment  verbosity level by one. Startlevel is 0 with only few messages.  Level 1
              prints progress report with long running operations  and  also  causes  some  extra
              lines  to  be  put  out  with info retrieval options.  Level 2 additionally reports
              about option settings derived from arguments or  startup  files.  Level  3  is  for
              debugging  and  useful  mainly in conjunction with somebody who had a look into the
              program sourcecode.

       -V     Enable logging of SCSI commands to stderr. This allows expert  examination  of  the
              interaction  between  libburn  and  the drive. The commands are specified in SCSI-3
              standards SPC, SBC, MMC.

       -waiti Wait until input data is available at stdin or EOF  occurs  at  stdin.   Only  then
              begin to access any drives.
              One  should  use  this  if cdrskin is working at the end of a pipe where the feeder
              process reads from the drive before it starts  writing  its  output  into  cdrskin.
              Example:
              mkisofs ... -C 0,12800 -M /dev/sr0 | \
              cdrskin dev=/dev/sr0 ... -waiti -
              This  option  works  even if stdin is not among the track sources. If no process is
              piping in, then the Enter key of your terminal will act  as  trigger  for  cdrskin.
              Note that this input line will not be consumed by cdrskin if stdin is not among the
              track sources. It will end up as shell command, usually.

       Alphabetical list of options which are genuine to cdrskin and intended for normal use:

       --adjust_speed_to_drive
              Curb explicitly given speed= values to the maximum which is announced by the  drive
              for  the  loaded  media.  By  default, such an adjustment is only made with pseudo-
              speeds 0 and -1 whereas speed settings > 0 are sent unchanged to  the  drive  which
              will then choose an appropriate speed on its own.

       --allow_emulated_drives
              Enable  drive  addresses  of the form dev=stdio:<path>. See above, paragraph "Drive
              preparation and addressing".

       --allow_setuid
              Disable the  loud  warning  about  insecure  discrepance  between  login  user  and
              effective user which indicates application of chmod u+s to the program binary.  One
              should not do this chmod u+s , but it is an old cdrecord tradition.

       --any_track
              Allow source_addresses to begin with "-" (plus further characters) or to contain  a
              "="  character.   By  default  such arguments are seen as misspelled options. It is
              nevertheless   not   possible   to   use   one   of   the   options   listed   with
              --list_ignored_options.

       assert_write_lba=block_number|byte_address
              Abort  if  the  write  address  given with this option is not the same as predicted
              immediately before the write session starts. This option can ensure  that  a  start
              address  which  was  presumed  by a formatter like mkisofs -C is really used by the
              drive for writing.  assert_write_lba=0 effectively demands blank media and excludes
              appendables.
              Block numbering is peculiar: If the last character of the option string is a letter
              [a-zA-Z] then the usual unit scaling by "s", "k", "m", etc. applies and the  result
              is  divided  by  2048.  Else the number value of the string is taken as plain block
              number with block size 2048 byte.  (E.g ...=1000 or  ...=1000s  means  block  1000,
              ...=1m means block 512, ...=4096b means block number 2)

       cd_start_tno=number
              Set  the  number  which shall be written as CD track number with the first track of
              the session. The following tracks will then get written with consecutive  CD  track
              numbers.  The  resulting  number  of  the last track must not exceed 99. The lowest
              possible start number is 1, which is also the default.
              This setting applies only to CD SAO writing. It overrides the track number settings
              caused by options cuefile= or input_sheet_v07t=.

       cdtext_to_textfile=path
              Extract  the  CD-TEXT  packs  from the lead-in of an audio CD and write them to the
              file with the given path. If CD-TEXT can be  retrieved,  then  this  file  will  be
              suitable for option textfile=.
              Not  all  drives  can  read  CD-TEXT and not all audio CDs bear CD-TEXT.  It is not
              considered an error if no CD-TEXT is available.

       cdtext_to_v07t=path
              Extract the CD-TEXT packs from the lead-in of an audio CD and write them  as  human
              readable  Sony Input Sheet Version 0.7T to the file with the given path. If CD-TEXT
              can be retrieved, then this file will be suitable for option input_sheet_v07t=.
              If the given path is "-", then the result is printed to standard output.
              Not all drives can read CD-TEXT and not all audio CDs  bear  CD-TEXT.   It  is  not
              considered an error if no CD-TEXT is available.

       --demand_a_drive
              Exit with a nonzero value if no drive can be found during a bus scan.

       --devices
              List the device file addresses of all accessible CD drives. In order to get listed,
              a drive has to offer rw-permission for the cdrskin user and it may not be busy. The
              superuser  should be able to see all idle drives listed and busy drives reported as
              "SORRY" messages.
              Each available drive gets listed by a line containing the following fields:
              Number dev='Devicefile' rw-Permissions : 'Vendor' 'Model'
              Number and Devicefile can both be used with option dev=,  but  number  is  volatile
              (numbering changes if drives become busy).

       --device_links
              Like  --devices,  but  presenting the drives with addresses of symbolic links which
              point to the actual device files.
              Modern GNU/Linux systems may shuffle drive addresses from boot to boot.   The  udev
              daemon is supposed to create links which always point to the same drive, regardless
              of its system address.  Option --device_links shows the addresses of such links  if
              they  begin  by  "/dev/dvd"  or  "/dev/cd".  Precedence is: "dvdrw", "cdrw", "dvd",
              "cdrom", "cd".

       direct_write_amount=size
              Do not write a session with tracks but rather make an appropriate number of  direct
              write  operations  with no preparations. Flushing the drive buffer will be the only
              finalization. It is advised  to  eject  the  media  afterwards  because  the  write
              operations  circumvent  the  usual  system  i/o  with  its  caches  and buffers. By
              ejecting, those invalid memory copies get surely discarded.
              Only few media can be written this way: DVD-RAM, BD-RE,  RVD+RW  and  overwriteable
              DVD-RW. Writing is restricted to the already formatted area of the media.
              Writing  starts  at  byte  0  of  the  media  or  at  the  address  given by option
              write_start_address= .  Only the first track source is used as input for the  write
              operations.  The fifo (fs=) is disabled.
              Parameter  size  controls  the  amount of data to be written. Size 0 means that the
              track source shall be used up until EOF. In this case, the last  write  transaction
              gets  padded  up to the necessary size by zeros. Size -1 revokes direct writing and
              switches back to normal session oriented writing.
              Both, write_start_address and direct_write_amount size must be aligned to  a  media
              dependend   transaction  size.  With  DVD-RAM,  BD-RE,  DVD+RW  this  is  2k,  with
              overwriteable DVD-RW it is 32k.

       dvd_obs=default|32k|64k
              Set the number of bytes to be transmitted with each write operation to  DVD  or  BD
              media.  With  most  write  types, tracks get padded up to the next multiple of this
              write size (see option --obs_pad).  A number of 64 KB may improve  throughput  with
              systems  which  show  latency  problems.  The default depends on media type, option
              stream_recording=, and on compile time options.

       extract_audio_to=directory_path
              Extract tracks from an audio CD  as  separate  WAVE  audio  files  into  the  given
              directory.   This  directory  has to already exist, but none of the track files may
              exist.  This option will rather fail than overwrite an existing file.
              By default all tracks of the CD are extracted  to  files  with  names  trackNN.wav,
              where NN is the track number from 01 to at most 99.

       extract_basename=name
              Set a filename which shall be used by extract_audio_to= instead of the default name
              "track".

       --extract_dap
              Enable Digital Audio Play flaw  obscuring  mechanisms  like  audio  data  mute  and
              interpolate.

       extract_tracks=number[,number[,...]]
              Set  a  list  of  track  numbers  to  define  which  tracks  shall  be extracted by
              extract_audio_to=.  If no extract_tracks= is  given,  then  all  audio  tracks  get
              extracted.  It is permissible to have more than one extract_tracks= option in order
              to split a long list into shorter pieces.
              The lowest permissible track number is 1, the highest is 99.

       fallback_program=command
              Set a command name to be executed if cdrskin encounters  a  known  cdrecord  option
              which   it   does   not   yet  support.  If  a  non-empty  command  is  given  with
              fallback_program=, and if no essential options are  given  which  are  specific  to
              cdrskin, then cdrskin will delegate the job to said command.
              The  natural commands to be given are cdrecord or wodim but one may well submit the
              address of an own program.
              The fallback program will get all arguments of cdrskin which do not match the shell
              patterns  --?*  or  *_*=*  . This eventually suppresses path names of track sources
              which happen to match those patterns. The options from the startup  files  are  not
              handed to the fallback program.
              Fallback  program  execution  is  disabled  if cdrskin is run setuid and not option
              --allow_setuid is given. In general, the drive's  device  files  and  the  involved
              programs  should  be set up so that each program runs under its advised conditions.
              (E.g. cdrskin as member of group floppy, cdrecord setuid root.)
              Two alias names for cdrskin are predefined with default fallback programs:
              unicord implies fallback_program=cdrecord
              codim implies fallback_program=wodim

       --four_channel
              Indicate for subsequent tracks that they were mastered with four channels.

       fifo_start_at=size
              Do not wait for full fifo but start burning as soon as the given number of bytes is
              read.  This  option  may  be  helpful  to  bring the average throughput near to the
              maximum throughput of a drive. A large fs= and a  small  fifo_start_at=  combine  a
              quick  burn  start  and  a large savings buffer to compensate for temporary lack of
              source data. At the beginning of burning, the software  protection  against  buffer
              underun  is  as  weak  as  the  size of fifo_start_at= . So it is best if the drive
              offers   hardware   protection   which   is   enabled    automatically    if    not
              driveropts=noburnfree is given.

       --grow_overwriteable_iso
              Enable  emulation  of multi-session writing on overwriteable media which contain an
              ISO-9660 filesystem. This emulation is learned from growisofs -M but adapted to the
              usage model of
              cdrskin -msinfo
              mkisofs -C -M | cdrskin -waiti [-multi] -
              --grow_overwriteable_iso does not hamper the use of true multi-session media.  I.e.
              it is possible to use the same cdrskin options with both  kinds  of  media  and  to
              achieve  similar  results  if  ISO-9660  filesystem images are to be written.  This
              option implies option -isosize and therefore demands that the  track  source  is  a
              ISO-9660 filesystem image.
              With  overwriteable  media  and  no  option  blank=fast|all  present  it expands an
              eventual ISO-9660 filesystem on media. It is assumed that this image's  inner  size
              description  points  to  the  end of the valuable data.  Overwriteable media with a
              recognizable ISO-9660 size will be regarded as appendable  rather  than  as  blank.
              I.e.  options  -msinfo  and -toc will work.  -toc will always show a single session
              with its size increasing with every added mkisofs image.
              If not overridden by option write_start_address=, the track with the new image will
              be  placed  behind  the end of the old one. One may use option assert_write_lba= to
              make sure that media state and mkisofs job do match.
              --grow_overwriteable_iso causes option blank=fast|all  to  invalidate  an  eventual
              ISO-9660  image by altering the first few bytes of block 16 on overwriteable media.
              Option -multi is tolerated in order not to hamper true multi-session media.
              An equivalent of growisofs -Z for overwriteable media is:
              mkisofs | cdrskin --grow_overwriteable_iso blank=fast [-multi] -
              With multi-session DVD, blank=fast will act like dvd+rw-format -blank=full .
              growisofs -dvd-compat is roughly equivalent to cdrskin without option -multi.

       input_sheet_v07t=path
              Read CD-TEXT definitions from a Sony Input Sheet version 0.7T. Up to eight or seven
              such  sheets  can  be read by multiple input_sheet_v07t= options.  Each will define
              one CD-TEXT language block.
              The first line of a sheet file decides whether more than one sheet may  be  defined
              by the file. If it is
                Input Sheet Version = 0.7T
              then  each  further  line  with  that  text switches to the next sheet for the next
              block.  If it is not, then all definitions apply to a single block.
              The information in such a sheet is given by text lines of the following form:
                purpose specifier [whitespace] = [whitespace] content text
              [whitespace] is zero or more ASCII 32 (space) or ASCII  9  (tab)  characters.   The
              purpose  specifier  tells the meaning of the content text.  Empty content text does
              not cause a CD-TEXT attribute to be attached.
              The following purpose specifiers apply to the session as a whole:
                Purpose specifier   | Content example
                -------------------------------------------------------------
                Text Code           = 8859
                Language Code       = English
                Album Title         = Joyful Nights
                Artist Name         = United Cat Orchestra
                Songwriter          = Various Songwriters
                Composer            = Various Composers
                Arranger            = Tom Cat
                Album Message       = For all our fans
                Catalog Number      = 1234567890
                Genre Code          = Classical
                Genre Information   = Feline classic music
                Closed Information  = This is not to be shown by CD players
                UPC / EAN           = 1234567890123
                Text Data Copy Protection = OFF
                First Track Number  = 1
                Last Track Number   = 3
              The following purpose specifiers apply to particular tracks:
                Purpose specifier   | Content example
                -------------------------------------------------------------
                Track 01 Title      = Song of Joy
                Track 01 Artist     = Felix and The Purrs
                Track 01 Songwriter = Friedrich Schiller
                Track 01 Composer   = Ludwig van Beethoven
                Track 01 Arranger   = Tom Cat
                Track 01 Message    = Fritz and Louie once were punks
                ISRC 01             = XYCRR1101234
              Track numbers are decimal despite the leading 0. There  should  be  as  many  track
              definitions as there are track source files given.
              See  libburn's  doc/cdtext.txt  for  a detailed definition of 0.7T and the possible
              values for Text Code, Language Code, Genre Code, Text Data Copy Protection.
              The Q sub-channel settings by "UPC / EAN" and "ISRC" may be overridden  by  options
              mcn=  and  isrc=.   This  will  not  affect  their appearance as CD-TEXT.  They may
              override cuefile= commands CATALOG and ISRC in the same way.
              If options -text cuefile= are given and if the cue sheet file defines CD-TEXT, then
              only  seven  input_sheet_v07t=  options may be given. They will then be used as CD-
              TEXT language blocks 1 to 7.
              This option will get into effect only if no option textfile= is given.   The  write
              mode must be SAO on CD. All tracks must be -audio tracks.
              The track numbers may be overridden by option cd_start_tno=.

       --list_formats
              List  the  available  format  descriptors  as  reported by the drive for the loaded
              media. Each descriptor line begins with "Format  idx"  and  the  descriptor's  list
              index,  followed  by  a ":", the format type, the number of payload blocks and that
              same number converted to MiB.
              The meaning of the format types is defined by the MMC standard with command  FORMAT
              UNIT. A user will more be interested in the sizes than in the types.

       --list_ignored_options
              List  all  ignored cdrecord options. The "-" options cannot be used as addresses of
              track sources. No track source address may begin with a text  equal  to  an  option
              which ends by "=". The list is ended by an empty line.

       --list_speeds
              Put  out  a  list  of  speed values as reported by the output drive with the loaded
              medium. This does not necessarily mean that the medium is writable  or  that  these
              speeds  are  actually achievable. Especially the lists reported with empty drive or
              with ROM media obviously advertise speeds for other media.
              It is not mandatory to use speed values out of the  listed  range.   The  drive  is
              supposed to choose a safe speed that is as near to the desired speed as possible.
              At  the  end  of the list, "Write speed L" and "Write speed H" are the best guesses
              for lower and upper speed limit.  "Write speed l" and "Write speed  h"  may  appear
              only with CD and eventually override the list of other speed offers.
              Only  if the drive reports contradicting speed information there will appear "Write
              speed 0" or "Write speed-1", which tell the outcome of speed selection  by  options
              speed=0 resp. speed=-1, if it deviates from "Write speed L" resp. "Write speed H".

       --long_toc
              Like  option  -toc  but marking each session start by a line "first: X last: Y" and
              each session end by "track:lout ...".

       --no_load
              When aquiring the optical drive, do not try to load its tray. This yields the  same
              behavior  for  desktop  drives  with tray loader as is shown by laptop drives which
              usually lack a motorized tray loader.

       --no_rc
              Only if used as first command  line  argument  this  option  prevents  reading  and
              interpretation of eventual startup files. See section FILES below.

       --pacifier_with_newline
              Adds  a  newline character to each pacifier line that would elsewise be overwritten
              by the next pacifier line.  Such  lines  are  emitted  during  a  run  of  writing,
              formatting, or blanking if option -v is given.

       --prodvd_cli_compatible
              Activates  behavior  modifications  with  some  DVD  situations which bring cdrskin
              nearer to the behavior of cdrecord-ProDVD:
              Option -multi with unsuitable media is not an error but simply has no effect.
              Options blank=fast and blank=all deformat overwriteable DVD-RW media.
              Option blank=fast does indeed minmal blanking with DVD-RW.  This  may  yield  media
              which can only do DAO but not Incremental Streaming.

       --single_track
              Accept only the last argument of the command line as track source address.

       stdio_sync=on|off|number
              Set the number of bytes after which to force output to drives with prefix "stdio:".
              This forcing keeps the memory from being clogged with lots of pending data for slow
              devices.  Default  "on"  is  the  same  as "16m".  Forced output can be disabled by
              "off".

       stream_recording=on|off|number
              By setting "on" request that compliance to the desired speed setting  is  preferred
              over management of write errors. With DVD-RAM and BD this can bring effective write
              speed near to the nominal write speed of the media.  But it will also  disable  the
              automatic  use  of  replacement  blocks  if write errors occur. It might as well be
              disliked or ignored by the drive.
              If a number is given, then error management stays enabled for  all  byte  addresses
              below that number. Any number below 16s is the same as "off".

       tao_to_sao_tsize=size
              Set an exact fixed size for the next track to be in effect only if the track source
              cannot deliver a size prediction and no tsize= was specified  and  an  exact  track
              size prediction is demanded by the write mode.
              This  was  the  fallback from bad old times when cdrskin was unable to burn in mode
              -tao . It came back with  minimally  blanked  DVD-RW  which  allow  no  Incremental
              Streaming  (-tao)  resp.  with explicitly selected write mode -sao for best DVD-ROM
              compatibility.
              If the track source delivers less bytes than announced then the missing  ones  will
              be filled with zeros.

       --tell_media_space
              Prepare  a  recording  session,  do  not  perform it but rather inquire the maximum
              number of 2048 byte data blocks which may be written in the current state of  media
              with  the  prepared setup. So this option disables recording of data. It does allow
              blanking, though, and will measure space afterwards.
              It is not mandatory to give track  sources  but  their  nature  may  influence  the
              available  capacity.  So  for  most  realistic results one may set up the full burn
              session and add --tell_media_space. But if one has  to  expect  a  cdrskin  version
              prior to 0.3.3 no track source should be given in order not to start an involuntary
              burn session.  In this case set at least -sao or -tao explicitly.
              The result gets printed to standard output. It is 0  or  empty  if  no  writing  is
              possible  with  the  given  options.   This  option redirects to stderr all message
              output except its own result string and eventual output of -msinfo.

       textfile_to_v07t=path
              Read a CD-TEXT pack file (e.g. cdtext.dat from a run with -v -v -toc) and print its
              content   in   the   human   readable   format   that   is  described  with  option
              input_sheet_v07t=.
              The program run ends immediately thereafter.  No drive  scan  will  happen  and  no
              drive will be aquired.
              To avoid the cdrskin start message in the output, run:
                cdrskin textfile_to_v07t=cdtext.dat | grep -v '^cdrskin'

       --two_channel
              Indicate for subsequent tracks that they were mastered with two channels.

       write_start_address=byte_offset
              Set  the address on media where to start writing the track. With DVD+RW, DVD-RAM or
              BD-RE byte_offset must be aligned to 2 kiB blocks, but better is 32 kiB.  With DVD-
              RW 32 kiB alignment is mandatory.
              Other media are not suitable for this option yet.

       Alphabetical  list  of options which are only intended for very special situations and not
       for  normal use:

       --abort_handler
              Establish default signal handling not to leave a drive in busy state but rather  to
              shut  it  down and to wait until it has ended the final operations.  This option is
              only needed for revoking eventual --ignore_signals or --no_abort_handler.

       --allow_untested_media
              Enable the use of media profiles which have been implemented but  not  yet  tested.
              Currently  this  option  is  without  effect  because no media types are under test
              reservation.
              (If you really test experimental media, then please report the outcome on  libburn-
              hackers@pykix.org)

       --cdtext_dummy
              Prepare a burn run, report the effective array of CD-TEXT packs to stdout, and then
              end the program run without starting to burn the session.  A blank  CD-R  or  CD-RW
              has to be present in the drive, nevertheless.
              The  output is formatted in lines which describe 18 bytes as 2-digit hex numbers or
              as single printable characters.  See  libburn  document  doc/cdtext.txt  about  the
              format of these records.

       --cdtext_verbose
              Like  --cdtext_dummy  but  without  preventing the burn run. Combinable with option
              -dummy to exercise a CD burn run with no persistent impact on the medium.

       dev_translation=<sep><from><sep><to>
              Set drive address alias.  This  was  necessary  before  cdrskin-0.2.4  to  manually
              translate cdrecord addresses into cdrskin addresses.
              <sep>  is  a  single  character  which  may not occur in the address string <from>.
              <from> is an address as expected to be given by the user via option dev=.  <to>  is
              the address to be used instead whenever <from> is given.  More than one translation
              instruction can be given in one cdrskin run.
              E.g.: dev_translation=+ATA:1,0,0+/dev/sr1 dev_translation=+ATA:1,1,0+/dev/sr2

       --drive_abort_on_busy
              Linux specific: Abort process if a busy drive is encountered.

       --drive_blocking
              Linux specific: Try to wait  for  a  busy  drive  to  become  free.   This  is  not
              guaranteed to work with all drivers. Some need nonblocking i/o.

       --drive_f_setlk
              Linux specific: Try to get exclusive lock on drive device file via fcntl(2).

       --drive_not_exclusive
              Linux specific: Combine --drive_not_f_setlk and --drive_not_o_excl.

       --drive_not_f_setlk
              Linux specific: Do not try to get exclusive lock on drive device file via fcntl(2).

       --drive_not_o_excl
              Linux  specific:  Do  not  ask the operating system to prevent opening busy drives.
              Wether this leads to senseful behavior depends on operating system and kernel.

       drive_scsi_dev_family=sr|scd|sg
              Linux specific: Select a SCSI device file family  to  be  scanned  for  by  options
              --devices,  --device_links  and  -scanbus.   Normally  this  is  /dev/sgN on kernel
              versions < 2.6 and /dev/srN on kernels >= 2.6 . This option  allows  to  explicitly
              override  that  default in order to meet other programs at a common device file for
              each drive.  On kernel 2.4 families sr and scd will find no drives.
              Device file family /dev/hdX on kernel >= 2.6 is not affected by this setting.

       --drive_scsi_exclusive
              Linux specific: Try  to  exclusively  reserve  device  files  /dev/srN,  /dev/scdM,
              /dev/sgK  of  drives.   This  would  be  helpful to protect against collisions with
              program growisofs.  Regrettably on Linux kernel 2.4 with  ide-scsi  emulation  this
              seems  not  to  work.  Wether  it  becomes helpful with new Linux systems has to be
              evaluated.

       --fifo_disable
              Disable fifo despite any fs=.

       --fifo_per_track
              Use a separate fifo for each track.

       --fill_up_media
              Expand the last track of the session to occupy all  remaining  free  space  on  the
              media.
              This  option  overrides  option -multi. It will not fill up media if option -sao is
              given with CD media.
              Caution: With multi-session media this option might increase readatibility on  DVD-
              ROM  drives  but  with  some  DVD  recorders  and media types it might also fail to
              produce readable media at all. "Your mileage may vary".
              You can expect the best possible read compatibility if you do  not  use  -multi  at
              all.

       grab_drive_and_wait=seconds
              Open  the addressed drive, wait the given number of seconds, release the drive, and
              do normal work as indicated by the other options used. This option helps to explore
              the  program behavior when faced with busy drives. Just start a second cdrskin with
              option --devices while grab_drive_and_wait= is still active.

       --ignore_signals
              Try to ignore any signals rather than to abort the program. This is not a very good
              idea. You might end up waiting a very long time for cdrskin to finish.

       modesty_on_drive=<mode>[:min_percent=<num>][:max_percent=<num>]
              Mode  1 keeps the program from trying to write to the burner drive while its buffer
              is in danger to be filled by more than max_percent. If  this  filling  is  exceeded
              then the program will wait until the filling is at most min_percent.
              This  can ease the load on operating system and drive controller and thus help with
              achieving better input  bandwidth  if  disk  and  burner  are  not  on  independent
              controllers (like hda and hdb). Unsufficient input bandwidth is indicated by output
              "(fifo  xy%)" of option -v if xy is lower than 90 for some time.  modesty_on_drive=
              might hamper output bandwidth and cause buffer underruns.
              To  have  max_percent larger than the burner's best actual buffer fill has the same
              effect as min_percent==max_percent. Some burners do not use their full buffer  with
              all  media types. Watch output "[buf xy%]" of option -v to get an impression of the
              actual buffer usage. Some burners are not suitable because they report buffer  fill
              with granularity too large in size or time.
              Mode 0 disables this feature. Mode -1 keeps it unchanged. Default is:
              modesty_on_drive=0:min_percent=65:max_percent=95
              Percentages are permissible in the range of 25 to 100.

       --no_abort_handler
              On  signals  exit even if the drive is in busy state. This is not a very good idea.
              You might end up with a stuck drive that refuses to hand out the media.

       --no_blank_appendable
              Refuse to blank appendable CD-RW or DVD-RW. This is a feature that was once builtin
              with libburn. No information available for what use case it was needed.

       --no_convert_fs_adr
              Do  only  literal  translations  of  dev=.  This prevents cdrskin from test-opening
              device files in order to find one that matches the given dev= specifier.
              Partly Linux specific: Such opening is needed for Bus,Target,Lun  addresses  unless
              option  --old_pseudo_scsi_adr  is  given.  It is also needed to resolve device file
              addresses which are not listed with cdrskin --devices but nevertheless point  to  a
              usable drive. (Like /dev/sg0 using the same SCSI address as /dev/sr0.)

       --obs_pad
              Pad  the  data  of last write operation of a DVD-R[W] DAO session or stdio: pseudo-
              drive up to the full size of an output chunk.   This  padding  has  to  be  applied
              automatically  to the other DVD and BD media types, where it causes e.g. ISO images
              to have trailing unclaimed blocks.
              Use this option if there is the suspicion that DAO sessions abort with your  kernel
              and/or DVD drive, if their size is not a multiple of 16 blocks.
              This option may also get enabled at compile time of libburn.

       --old_pseudo_scsi_adr
              Linux  specific:  Use  and report literal Bus,Target,Lun addresses rather than real
              SCSI and pseudo ATA addresses. This method is outdated  and  was  never  compatible
              with original cdrecord.

       sao_postgap=off|number
              Define  whether  a  post-gap  shall be written at the end of the track and how many
              sectors this gap shall have. A post-gap occupies the range of an  additional  index
              of  the  track.  It contains zeros. No bytes from the track source will be read for
              writing the post-gap.
              This setting affects only CD SAO write runs.

       sao_pregap=off|number
              Define whether a pre-gap shall be written before the track  and  how  many  sectors
              this  pre-gap  shall  have.  A pre-gap is written in the range of track index 0 and
              contains zeros resp. silence. No bytes from the  track  source  will  be  read  for
              writing the pre-gap.
              This setting affects only CD SAO write runs.
              The  first track automatically gets a pre-gap of at least 150 sectors. Its size can
              only be enlarged by this call.

       --xa1-ignore
              Silently interpret option -xa1 as -data. This may be necessary if a  frontent  does
              not prepare -xa1 block headers but insists in using option -xa1.

EXAMPLES

   Get an overview of drives and their addresses:
       cdrskin -scanbus
       cdrskin dev=ATA -scanbus
       cdrskin --device_links

   Get info about a particular drive or loaded media:
       cdrskin dev=0,1,0 -checkdrive
       cdrskin dev=ATA:1,0,0 -v -atip
       cdrskin dev=/dev/hdc -minfo

   Prepare CD-RW or DVD-RW for re-use, DVD-RAM or BD-RE for first use:
       cdrskin -v dev=/dev/sg1 blank=as_needed -eject

   Format DVD-RW to avoid need for blanking before re-use:
       cdrskin -v dev=/dev/sr0 blank=format_overwrite

   De-format DVD-RW to make it capable of multi-session again:
       cdrskin -v dev=/dev/sr0 blank=deformat_sequential

   Write ISO-9660 filesystem image as only one to blank or formatted media:
       cdrskin -v dev=/dev/hdc speed=12 fs=8m \
         blank=as_needed -eject padsize=300k my_image.iso

   Write  compressed afio archive on-the-fly (not possible with minimally blanked DVD-RW or DVD-R
       DL):
       find . | afio -oZ - | \
       cdrskin -v dev=0,1,0 fs=32m speed=8 \
         blank=as_needed padsize=300k -

   Write multi-session to the same CD, DVD-R[W], DVD+R[/DL], or BD-R:
       cdrskin dev=/dev/sr0 -v padsize=300k -multi 1.iso
       cdrskin dev=/dev/sr0 -v padsize=300k -multi 2.iso
       cdrskin dev=/dev/sr0 -v padsize=300k -multi 3.iso
       cdrskin dev=/dev/sr0 -v padsize=300k 4.iso

   Get multi-session info for option -C of program mkisofs:
       c_values=$(cdrskin dev=/dev/hdc -msinfo 2>/dev/null)
       mkisofs ... -C "$c_values" ...

   Inquire free space on media for a -multi run:
       x=$(cdrskin dev=/dev/sr0 -multi \
         --tell_media_space 2>/dev/null)
       echo "Available: $x blocks of 2048 data bytes"

   Write audio tracks and CD-TEXT to CD:
       cdrskin -v dev=ATA:1,0,0 speed=48 -sao \
         input_sheet_v07t=cdtext.v07t \
         track1.wav track2.au -audio -swab track3.raw

   Extract audio tracks and CD-TEXT from CD into directory /home/me/my_cd:
       mkdir /home/me/my_cd
       cdrskin -v dev=/dev/sr0 extract_audio_to=/home/me/my_cd \
         cdtext_to_v07t=/home/me/my_cd/cdtext.v07t

FILES

   Startup files:
       If not --no_rc is given as the first argument then cdrskin attempts on startup to read the
       arguments from the following files:

       /etc/default/cdrskin
       /etc/opt/cdrskin/rc
       /etc/cdrskin/cdrskin.conf
       $HOME/.cdrskinrc

       The  files  are read in the sequence given above, but none of them is required for cdrskin
       to function properly. Each readable line is treated  as  one  single  argument.  No  extra
       blanks.  A first character '#' marks a comment, empty lines are ignored.
       Example content of a startup file:
       # This is the default device
       dev=0,1,0
       # Some more options
       fifo_start_at=0
       fs=16m

   Disabling superuser safety precautions:
       The  superuser  is normally banned from using any other emulated drive but /dev/null. This
       ban can be lifted by the existence of file

       /root/cdrskin_permissions/allow_emulated_drives

       where the directory must be owned by the superuser and must not  offer  w-permissions  for
       group or others.
       Warning:  Superusers  must take care not to spoil their hard disk via its raw block device
       (like stdio:/dev/hda or stdio:/dev/sd0).

SEE ALSO

       Formatting data track sources for cdrskin:
              mkisofs(8), genisoimage(8), xorriso(1), afio(1), star(1)

       Other CD/DVD/BD burn programs:
              cdrecord(1), wodim(1), xorriso(1)

       For DVD/BD burning (also tutor of libburn's DVD/BD capabilities):
              growisofs(1)

AUTHOR

       cdrskin was written by Thomas Schmitt <scdbackup@gmx.net>.

       This manual page was started by George Danchev <danchev@spnet.net> and is  now  maintained
       by Thomas Schmitt.

                                   Version 1.3.4, Dec 12, 2013                         CDRSKIN(1)