Schily's USER COMMANDS                               BTCFLASH(1L)


     btcflash - Firmware flash utility for BTC  DRW1008  DVD+/-RW


     btcflash dev=device [ options ] [ f=firmwarefile ]


     Btcflash is used to read  update  the  Firmware  for  a  BTC
     DRW1008 DVD+/-RW recorder.

     Be very careful when writing firmware as this  program  does
     not check for the correctness of the target device.

  Device naming
     For a list of possible device name parameters call  btcflash
     -scanbus  or  btcflash  dev=help and then use the right dev=
     parameter based on the device listing.


          Prints a short summary of the p options and exists.

          Print version information and exit.

          Set the SCSI target for the CD/DVD/BluRay-Recorder, see
          notes  above.  A typical target device specification is
          dev=1,6,0 .  If a filename must  be  provided  together
          with  the  numerical target specification, the filename
          is implementation specific.  The  correct  filename  in
          this  case  can be found in the system specific manuals
          of the target operating system.  On  a  FreeBSD  system
          without CAM support, you need to use the control device
          (e.g.  /dev/rcd0.ctl).  A correct device  specification
          in this case may be dev=/dev/rcd0.ctl:@ .

        General SCSI addressing
          The  target  device  to  the  dev=  option  refers   to
          scsibus/target/lun  of the CD/DVD/BluRay-Recorder. Com-
          munication on SunOS  is  done  with  the  SCSI  general
          driver scg. Other operating systems are using a library
          simulation of this driver.  Possible syntax  is:   dev=
          scsibus,target,lun  or  dev= target,lun.  In the latter
          case, the CD/DVD/BluRay-Recorder has to be connected to
          the  default  SCSI bus of the machine.  Scsibus, target
          and lun are integer numbers. Some operating systems  or
          SCSI transport implementations may require to specify a
          filename in addition.  In this case the correct  syntax
          for  the device is:  dev= devicename:scsibus,target, or

Joerg Schilling      Last change: 2016/01/26                    1

Schily's USER COMMANDS                               BTCFLASH(1L)

          dev= devicename:target,lun.  If the name of the  device
          node that has been specified on such a system refers to
          exactly one SCSI device, a shorthand in the  form  dev=
          devicename:@  or  dev=  devicename:@,lun  may  be  used
          instead of dev= devicename:scsibus,target,

        Remote SCSI addressing
          To access remote SCSI devices, you need to prepend  the
          SCSI  device  name  by  a  remote device indicator. The
          remote device indicator is either REMOTE:user@host:  or
          REMOTE:host:   A  valid remote SCSI device name may be:
          REMOTE:user@host:  to allow remote SCSI bus scanning or
          REMOTE:user@host:1,0,0  to  access  the  SCSI device at
          host connected to SCSI bus # 1,target  0,  lun  0.   In
          order  to  allow  remote access to a specific host, the
          rscsi(1) program needs to be present and configured  on
          the host.

        Alternate SCSI transports
          ATAPI drives are just SCSI drives that  inherently  use
          the  ATA  packet  interface  as  SCSI command transport
          layer build into the IDE (ATA) transport.  You may need
          to  specify an alternate transport layer on the command
          line if your OS does not implement a  fully  integrated
          kernel driver subsystem that allows to access any drive
          using SCSI commands via a single unique user interface.

          To access SCSI devices via alternate transport  layers,
          you need to prepend the SCSI device name by a transport
          layer indicator.  The transport layer indicator may  be
          something like USCSI: or ATAPI:.  To get a list of sup-
          ported transport layers for  your  platform,  use  dev=

        Portability Background
          To make btcflash portable to all  UNIX  platforms,  the
          syntax  dev= devicename:scsibus,target, is preferred as
          it hides OS specific knowledge about device names  from
          the  user.  A specific OS may not necessarily support a
          way to specify a real device file name  nor  a  way  to
          specify scsibus,target,lun.

          Scsibus 0 is the default SCSI bus on the machine. Watch
          the  boot  messages  for  more information or look into
          /var/adm/messages for more information about  the  SCSI
          configuration of your machine.  If you have problems to
          figure out what values for scsibus,target,lun should be
          used,  try  the  -scanbus  option of btcflash described

        Using logical names for devices
          If no dev option is present, btcflash will try  to  get

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Schily's USER COMMANDS                               BTCFLASH(1L)

          the device from the CDR_DEVICE environment.

          If a file  /etc/default/cdrecord  exists,  and  if  the
          argument  to the dev= option or the CDR_DEVICE environ-
          ment does not contain the characters ',', '/',  '@'  or
          ':',  it is interpreted as a device label name that was
          defined in the file  /etc/default/cdrecord  (see  FILES

        Autotarget Mode
          If no dev= option  and  no  CDR_DEVICE  environment  is
          present,  or  if it only contains a transport specifyer
          but no address notation, btcflash  tries  to  scan  the
          SCSI  address  space for CD-ROM drives.  If exactly one
          is found, this is used by default.

          Set  the  default  SCSI  command  timeout  value  to  #
          seconds.   The  default  SCSI  command  timeout  is the
          minimum timeout used for sending SCSI commands.   If  a
          SCSI  command  fails  due  to a timeout, you may try to
          raise  the  default  SCSI  command  timeout  above  the
          timeout  value  of  the failed command.  If the command
          runs correctly with a raised  command  timeout,  please
          report  the  better timeout value and the corresponding
          command to the author of the program.   If  no  timeout
          option  is  present, a default timeout of 40 seconds is

     debug=#, -d
          Set the misc debug value to # (with debug=#) or  incre-
          ment  the  misc  debug  level  by one (with -d). If you
          specify -dd, this equals to debug=2.  This may help  to
          find  problems  while  opening a driver for libscg.  as
          well as with sector  sizes  and  sector  types.   Using
          -debug slows down the process and may be the reason for
          a buffer underrun.

     kdebug=#, kd=#
          Tell the scg-driver to modify the  kernel  debug  value
          while SCSI commands are running.

     -silent, -s
          Do not print out a status report for failed  SCSI  com-

     -v   Increment the level of general verbosity by one.   This
          is used e.g. to display the progress of the process.

     -V   Increment the verbose level with respect of  SCSI  com-
          mand  transport  by  one.  This helps to debug problems
          during the process, that occur in the  CD-Recorder.  If

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Schily's USER COMMANDS                               BTCFLASH(1L)

          you  get incomprehensible error messages you should use
          this flag to get more detailed output.  -VV  will  show
          data buffer content in addition.  Using -V or -VV slows
          down the process.

          Specify the filename where the firmware should be  read

          Scan all SCSI devices on all SCSI busses and print  the
          inquiry  strings.  This option may be used to find SCSI
          address of  the  devices  on  a  system.   The  numbers
          printed out as labels are computed by: bus * 100 + tar-

          A comma separated list of SCSI options that are handled
          by  libscg.   The  implemented  options  may be uptated
          indepentendly  from   applications.    Currently,   one
          option:   ignore-resid  is  supported  to work around a
          Linux kernel bug.

     ts=# Set the maximum transfer size for a single SCSI command
          to #.  The syntax for the ts= option is the same as for
          cdrecord fs=# or sdd bs=#.

          If no ts= option has been specified, btcflash  defaults
          to  a  transfer  size  of  256 kB. If libscg gets lower
          values from the operating system, the value is  reduced
          to  the maximum value that is possible with the current
          operating system.  Sometimes, it may  help  to  further
          reduce  the  transfer  size  or to enhance it, but note
          that it may take a long time to find a better value  by
          experimenting with the ts= option.



     RSH  If the RSH environment is present, the  remote  connec-
          tion will not be created via rcmd(3) but by calling the
          program pointed to by RSH.  Use  e.g.  RSH=/usr/bin/ssh
          to create a secure shell connection.

          Note that this forces cdrecord to create a pipe to  the
          rsh(1)  program  and  disallows  cdrecord  to  directly
          access the network socket to the remote  server.   This
          makes  it  impossible  to set up performance parameters
          and slows down the connection compared to a  root  ini-
          tiated rcmd(3) connection.

Joerg Schilling      Last change: 2016/01/26                    4

Schily's USER COMMANDS                               BTCFLASH(1L)

          If the RSCSI environment is present,  the  remote  SCSI
          server  will  not be the program /opt/schily/sbin/rscsi
          but the program pointed to by  RSCSI.   Note  that  the
          remote  SCSI server program name will be ignored if you
          log in using an account that has been  created  with  a
          remote SCSI server program as login shell.


     cdrecord(1), scg(7), rcmd(3), ssh(1).



     A typical error message for a SCSI command looks like:

          btcflash: I/O error. test unit ready: scsi sendcmd: no error
          CDB:  00 20 00 00 00 00
          status: 0x2 (CHECK CONDITION)
          Sense Bytes: 70 00 05 00 00 00 00 0A 00 00 00 00 25 00 00 00 00 00
          Sense Key: 0x5 Illegal Request, Segment 0
          Sense Code: 0x25 Qual 0x00 (logical unit not supported) Fru 0x0
          Sense flags: Blk 0 (not valid)
          cmd finished after 0.002s timeout 40s

     The first line gives information about the transport of  the
     command.   The  text  after  the first colon gives the error
     text for the system call from the view  of  the  kernel.  It
     usually  is:   I/O  error  unless other problems happen. The
     next words contain a short description for the SCSI  command
     that fails. The rest of the line tells you if there were any
     problems for the transport of the command over the SCSI bus.
     fatal  error means that it was not possible to transport the
     command (i.e.  no  device  present  at  the  requested  SCSI

     The second line prints the SCSI command descriptor block for
     the failed command.

     The third line gives information on  the  SCSI  status  code
     returned  by  the  command,  if the transport of the command
     succeeds. This is error information from the SCSI device.

     The fourth line is a hex dump  of  the  auto  request  sense
     information for the command.

     The fifth line is the error text for the sense key if avail-
     able,  followed  by the segment number that is only valid if
     the command was a copy command. If the error message is  not
     directly  related  to the current command, the text deferred
     error is appended.

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Schily's USER COMMANDS                               BTCFLASH(1L)

     The sixth line is the error text for the sense code and  the
     sense  qualifier if available.  If the type of the device is
     known, the sense data is decoded from tables in scsierrs.c .
     The text is followed by the error value for a field replace-
     able unit.

     The seventh line prints the block number that is related  to
     the  failed  command  and  text for several error flags. The
     block number may not be valid.

     The eight line reports the timeout set up for  this  command
     and the time that the command really needed to complete.



     Joerg Schilling
     Seestr. 110
     D-13353 Berlin

     Additional information can be found on:

     If you have support questions, send them to:

     If you have definitely found a bug, send a mail to:

     To subscribe, use:

Joerg Schilling      Last change: 2016/01/26                    6

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