Provided by: sg3-utils_1.46-1build1_amd64 bug


       sg_get_config - send SCSI GET CONFIGURATION command (MMC-4 +)


       sg_get_config  [--brief]  [--current]  [--help]  [--hex]  [--inner-hex]  [--list]  [--raw]
       [--readonly] [--rt=RT] [--starting=FC] [--verbose] [--version] DEVICE


       Sends a SCSI GET CONFIGURATION command to DEVICE and decodes the  response.  The  response
       includes  the  features  and profiles of the device.  Typically these devices are CD, DVD,
       HD-DVD and BD players that may (but not necessarily) have media in them. These devices may
       well  be  connected  via ATAPI, USB or IEEE 1394 transports. In such cases they are "SCSI"
       devices only in the sense that they use the "Multi-Media command" set  (MMC).   MMC  is  a
       specialized SCSI command set whose definition can be found at .

       This  utility  is based on the MMC-4 and later draft standards. See section 5 on "Features
       and Profile for Multi_Media devices" for more information on specific  feature  parameters
       and profiles. The manufacturer's product manual may also be useful.

       Since  modern  DVD  and  BD writers support many features and profiles, the decoded output
       from this utility can be large. There are various ways to cut  down  the  output.  If  the
       --brief option is used only the feature names are shown and the feature parameters are not
       decoded. Alternatively if only one feature is of interest then this combination of options
       is  appropriate:  "--rt=2 --starting=FC". Another possibility is to show only the features
       that are relevant to the media in the drive (i.e. "current") with the "--rt=1" option.


       Arguments to long options are mandatory for short options as well.

       -b, --brief
              show the feature names but don't decode the parameters  of  those  features.   When
              used with --list outputs known feature names but not known profile names.

       -c, --current
              output features marked as current. This option is equivalent to '--rt=1'.

       -h, --help
              output the usage message then exit.

       -H, --hex
              output the response in hex (don't decode response).

       -i, --inner-hex
              decode to the feature name level then output each feature's data in hex.

       -l, --list
              list  all  known  feature  and  profile  names.  Ignore the device name (if given).
              Simply lists the feature names and profiles (followed by  their  hex  values)  that
              this  utility  knows  about.  If  --brief is also given then only feature names are

       -q, --readonly
              opens the DEVICE read-only rather than read-write which is the default.  The  Linux
              sg  driver needs read-write access for the SCSI GET CONFIGURATION command but other
              access methods may require read-only access.

       -r, --rt=RT
              where RT is the field of that name in the GET CONFIGURATION cdb.  Allowable  values
              are  0,  1,  2,  or 3 . The command's action also depends on the value given to the
              --starting=FC option. The default value is 0.  When RT  is  0  then  all  features,
              regardless  of  currency, are returned (whose feature code is greater than or equal
              to FC given to --starting=). When RT is 1 then all current  features  are  returned
              (whose  feature code is greater than or equal to FC). When RT is 2 then the feature
              whose feature code is equal to FC, if any, is returned.  When RT is 3 the  response
              is  reserved  (probably  yields  an  "illegal field in cdb" error). To simplify the
              meanings of the RT values are:
                0 : all features, current on not
                1 : only current features
                2 : only feature whose code is FC
                3 : reserved

       -R, --raw
              output response in binary (to stdout). Note that the short form is -R  unlike  most
              other utilities in this package that use -r for this action.

       -s, --starting=FC
              where  FC  is  the  feature  code value. This option works closely with the --rt=RT
              option. The FC value is in the range 0 to 65535  (0xffff)  inclusive.  Its  default
              value  is  0.  A  value  prefixed  with  "0x" (or a trailing 'h') is interpreted as

       -v, --verbose
              increase the level of verbosity, (i.e. debug output).

       -V, --version
              print the version string and then exit.


       There are multiple versions of the MMC (draft) standards: MMC [1997], MMC-2 [2000],  MMC-3
       [2002],  MMC-4 and MMC-5. The first three are now ANSI INCITS standards with the year they
       became standards shown in brackets. The draft immediately prior to standardization can  be
       found  at . In the initial MMC standard there was no GET CONFIGURATION
       command and the relevant information was obtained from the "CD capabilities and mechanical
       status  mode  page"  (mode  page  0x2a).  It  was  later  renamed the "MM capabilities and
       mechanical status mode page" and has been made  obsolete  in  MMC-4  and  MMC-5.  The  GET
       CONFIGURATION  command  was introduced in MMC-2 and has become a replacement for that mode
       page. New features such as support for "BD" (blue ray) media type can  only  be  found  by
       using  the  GET  CONFIGURATION  command.  Hence  older  CD players may not support the GET
       CONFIGURATION command in which case the "MM capabilities ..."  mode page  can  be  checked
       with sdparm(8), sginfo(8) or sg_modes(8).

       In  the  2.4 series of Linux kernels the DEVICE must be a SCSI generic (sg) device. In the
       2.6 series block devices can also be specified. For example "sg_get_config /dev/hdc"  will
       work  in  the 2.6 series kernels as long as /dev/hdc is an ATAPI device. In the 2.6 series
       external DVD writers attached via USB could be queried with "sg_get_config /dev/scd1"  for


       The  exit  status  of  sg_get_config  is  0  when  it  is  successful.  Otherwise  see the
       sg3_utils(8) man page.


       Written by Douglas Gilbert.


       Report bugs to <dgilbert at interlog dot com>.


       Copyright © 2004-2012 Douglas Gilbert
       This software is distributed under a FreeBSD license. There is NO warranty; not  even  for


       sginfo(8),   sg_modes(8),   sg_inq(8),  sg_prevent(8),  sg_start(8)  [all  in  sg3_utils],