NAME

       dskdump - Sector-level copy from one floppy or image file to another

SYNOPSIS

       dskdump  [-itype  TYPE]  [-otype  TYPE]  [-iside SIDE] [-oside SIDE] [-icomp COMP] [-ocomp
       COMP] [-idstep] [-odstep] [-retry COUNT] [-format FMT] [-first CYLINDER] [-last  CYLINDER]
       INPUT-IMAGE OUTPUT-IMAGE

DESCRIPTION

       Dskdump  copies  floppy  discs  or  images,  optionally  converting  image  types.  Unlike
       dsktrans(1), dskdump can handle discs  with  different  numbers  or  sizes  of  sector  on
       different tracks.

OPTIONS

       -itype TYPE
              Determines which driver is to be used to read from the source disc.

              auto    Select according to the disc image file. This is the default.

              dsk     Use the DSK (CPCEmu format) image driver.

              edsk    Use the extended version of the DSK format.

              floppy  Use the floppy driver.

              myz80   Use  the  hard  disk  (MYZ80  format) image driver.  (This format cannot be
                      autodetected.)

              cfi     Use the CFI (DOS fdcopy format)  image  driver.   (This  format  cannot  be
                      autodetected.)

              apridisk
                      Use  the  ApriDisk image driver (from the utility of the same name).  (This
                      format cannot be autodetected.)

              raw     Use the raw driver.

       -otype TYPE
              Determines which driver is to be used to write to the destination disc. The drivers
              are as for -itype.

       -icomp COMP
              Select  the  compression  method  used on the source disc image file (has no effect
              when reading a floppy disc).

              auto    Detect from the first few bytes of the file. This is the default.

              sq      Huffman coded (SQ / USQ).

              gz      Gzipped (gzip / gunzip).

              bz2     Burrows-Wheeler compressed (bzip2 / bunzip2).

       -ocomp COMP
              Select the compression to be used on output. Compression methods are as for -icomp,
              except that bz2 cannot be used.

       -iside SIDE
              Determines which side (0 or 1) of the source disc is to be read from.

       -oside SIDE
              Determines which side (0 or 1) of the destination disc is to be written to.

       -idstep
              Double-step  the  source  drive  (used  to  read  360k discs in 1.2Mb drives). Only
              supported by the Linux floppy driver.

       -odstep
              Double-step the destination drive (used to write 360k discs in 1.2Mb drives).  Only
              supported by the Linux floppy driver.

       -retry COUNT
              Set the number of times to attempt a read/write/format in case of error.

       -format FMT
              Do  not  autodetect  the  disc format; use the named format.  dskdump does not make
              extensive use of the disc format; it is chiefly used to  provide  a  guess  at  the
              number of tracks to dump.

       -first CYL
              Start  copying  at  the  specified  cylinder.  Cylinders  prior to this will not be
              formatted or written.

       -last CYL
              Copy up to and including the specified cylinder.

       -odstep
              Double-step the destination drive (used to write 360k discs in 1.2Mb drives).  Only
              supported by the Linux floppy driver.

SEE ALSO

       dsktrans(1)

AUTHOR

       John Elliott <seasip.webmaster@gmail.com>.