SCSI Emulation

J.Markoll j.markoll at
Wed Jan 11 18:00:37 UTC 2006

Old Rocker a écrit :
> I have two DVD drives, one of them a DVD/CD writer.  Both are ATAPI 
> drives.
> When I try to burn an .iso file with K3b, it appears to write OK, but 
> nothing is written, and the disk shows up as a blank disk without 
> anything having been written to it.
> When I try with GCombust and XCDroast to burn the disks, neither 
> recognise my burner as an scsi device.  Therefore no burning can take 
> place.
> Now, it could be that I have a faulty burner, but I'd like to eliminate 
> any software problems before I go down that route. I've googled for 
> "scsi emulation" + ubuntu to see if there are any howtos on the 
> subject, but I've drawn a blank.  I've tried searching the Ubuntu Wiki 
> without much success.
> Could anybody point me in the correct direction to get scsi emulation of 
> my burner in Ubuntu/Kubuntu?  Or give me some idea how to acheive it?
> Also scsi emulation was an option in the setup screen in Libranet, so it 
> was easy to acheive.  What is the view of this list about it being 
> included in Ubuntu....or is it?
Before looking too far, do you have cdrdao in your system ?
If yes, try (adapt to your device adress)
$ LANG=C cdrecord -scanbus dev=/dev/hdd
Cdrecord-Clone 2.01.01a01 (i686-pc-linux-gnu) Copyright (C) 1995-2004 
Joerg Schilling
NOTE: this version of cdrecord is an inofficial (modified) release of 
       and thus may have bugs that are not present in the original version.
       Please send bug reports and support requests to 
<cdrtools at>.
       The original author should not be bothered with problems of this 

cdrecord: Warning: Running on Linux-2.6.12-10-k7
cdrecord: There are unsettled issues with Linux-2.5 and newer.
cdrecord: If you have unexpected problems, please try Linux-2.4 or Solaris.
scsidev: '/dev/hdd'
devname: '/dev/hdd'
scsibus: -2 target: -2 lun: -2
Warning: Open by 'devname' is unintentional and not supported.
Linux sg driver version: 3.5.27
Error: Cannot gain SYS_RAWIO capability.Is cdrecord installed SUID root?
: Operation not permitted
Using libscg version 'ubuntu-0.8ubuntu1'.
cdrecord: Warning: using inofficial version of libscg (ubuntu-0.8ubuntu1 
'@(#)scsitransp.c      1.91 04/06/17 Copyright 1988,1995,2000-2004 J. 

         1,0,0   100) *
####here what I look for :        1,1,0   101) 'ATAPI   ' 'CDRW 52X32 
    ' 'Y.OS' Removable  CD-ROM

         1,2,0   102) *
         1,3,0   103) *
         1,4,0   104) *
         1,5,0   105) *
         1,6,0   106) *
         1,7,0   107) *

Then I can invoke (as user even though cdrecord belongs to root):

$cdrecord -v -dao dev=/dev/hdc truc.iso

take care tu umount your device before burning. I do not know why.
I know it does not work, otherwise.
Hope it leads you further on the good way.
Greetings, Joyce Markoll.

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