btcflash man page on aLinux

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

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

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

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

       The  device refers to scsibus/target/lun of the drive. Communication on
       SunOS is done with the SCSI general driver scg.	Other  operating  sys‐
       tems  are  using	 a library simulation of this driver.  Possible syntax
       is: dev= scsibus,target,lun or dev= target,lun.	In  the	 latter	 case,
       the  drive  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,lun  or  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:scsi‐

       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.

       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 supported transport layers for your  platform,  use  dev=

       To  make btcflash portable to all UNIX platforms, the syntax dev= devi‐
       cename:scsibus,target,lun is preferred as is hides OS  specific	knowl‐
       edge  about  device names from the user.	 A specific OS must not neces‐
       sarily 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 mes‐
       sages 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.

       -help  Prints a short summary of the p options and exists.

	      Print version information and exit.

	      Sets  the SCSI target for the drive, see notes above.  A typical
	      device specification is dev=6,0 .	 If a filename	must  be  pro‐
	      vided  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  sup‐
	      port,  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:@ .

	      On Linux, drives connected to a parallel port adapter are mapped
	      to a virtual SCSI bus. Different adapters are mapped to  differ‐
	      ent targets on this virtual SCSI bus.

	      If no dev option is present, cdrecord will try to get the device
	      from the CDR_DEVICE environment.

	      If the argument to the dev= option does not contain the  charac‐
	      ters  ',',  '/',	'@' or ':', it is interpreted as an label name
	      that may be found in the file /etc/default/cdrecord  (see	 FILES

	      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 time‐
	      out, 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  bet‐
	      ter 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 used.

       debug=#, -d
	      Set  the	misc  debug value to # (with debug=#) or increment 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 rea‐
	      son 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 commands.

       -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 command	trans‐
	      port  by	one.  This helps to debug problems during the process,
	      that occur in the	 CD-Recorder.	If  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.

       f=file Specify the filename where the firmware should be read from.

	      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 com‐
	      puted by: bus * 100 + target

       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  connection  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

	      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 initiated rcmd(3) connection.

       RSCSI  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 address).

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

       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  available,  fol‐
       lowed  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  cur‐
       rent command, the text deferred error is appended.

       The sixth line is the error text for the sense code and the sense qual‐
       ifier 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 replaceable 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

       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			   06/02/08			  BTCFLASH(1L)

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