[paranoia] No generic SCSI device found

Christopher Jones cjones12 at tulane.edu
Sat Feb 3 09:31:59 PST 2001



Are you trying to use SCSI emulation for an ATAPI device? 

You need ATAPI cdrom compiled as a module. If that driver takes the device
SCSI emulation can't take it back. In addition, you need to have the line

/dev/<cdrom device>=ide-scsi

in your lilo.conf, or send it as an option at the boot prompt. If you've done
all these things then I don't know. I seem to remember I had to dig past the
HOWTO to figure out about the line at the boot prompt. 

On Sat, 03 Feb 2001, you wrote:
> Hi,
> 
> I'm getting the error "No generic SCSI device found to match CDROM device /dev/scd0".
> 
> I have read the README and the FAQ, and I still cannot see what could be
> wrong.  Any help would be very much appreciated...
> 
> My system:
> 
>     Debian 2.2 with a stock kernel,
>     Ricoh MP6200S scsi re-writer, firmware rev. 2.20,
>     Adaptec 2940UW scsi interface,
>     There are no scsi hd's.
> 
> The MP6200 is /dev/scd0, there are no hardware probs AFAICT because this
> device mounts to /cdr without problem (it is not mounted when I try
> cdparanoia).  There is an audio CD in the MP6200 and the cddb info has
> been read off that so I guess this is ok too.  
> 
> /dev/cdrom points to my IDE cdrom, which gets mounted as /cdrom, but
> also not mounted at this time. 
> 
> According to the FAQ, I need to load the sg module (done that), create
> the /dev/sg? devices (done that too) and the /dev/sr? devices (already
> there), and have read permissions on the drive (I am in the cdrom group).
> 
> I've pasted as much detail as I can think of below, please ask for
> specifics if I missed anything:
> 
> ~$ uname -a
> Linux debian 2.2.17 #1 Sun Jun 25 09:24:41 EST 2000 i686 unknown
> ~$ su -c "modprobe sg"
> Password: 
> ~$ cat /proc/devices 
> Character devices:
>   1 mem
>   2 pty
>   3 ttyp
>   4 ttyS
>   5 cua
>   6 lp
>   7 vcs
>  10 misc
>  14 sound
>  21 sg
>  29 fb
> 128 ptm
> 136 pts
> 
> Block devices:
>   1 ramdisk
>   2 fd
>   3 ide0
>   7 loop
>   9 md
>  11 sr
>  22 ide1
>  36 ed
> ~$ ls -l /dev/scd0 /dev/sr* /dev/sg*
> brw-rw----    2 root     cdrom     11,   0 Jul  5  2000 /dev/scd0
> crw-------    1 root     cdrom     21,   0 Feb  3 14:09 /dev/sg0
> crw-------    1 root     cdrom     21,   1 Feb  3 14:09 /dev/sg1
> crw-------    1 root     cdrom     21,  10 Feb  3 14:09 /dev/sg10
> crw-------    1 root     cdrom     21,  11 Feb  3 14:09 /dev/sg11
> crw-------    1 root     cdrom     21,  12 Feb  3 14:09 /dev/sg12
> crw-------    1 root     cdrom     21,  13 Feb  3 14:09 /dev/sg13
> crw-------    1 root     cdrom     21,  14 Feb  3 14:09 /dev/sg14
> crw-------    1 root     cdrom     21,  15 Feb  3 14:09 /dev/sg15
> crw-------    1 root     cdrom     21,  16 Feb  3 14:09 /dev/sg16
> crw-------    1 root     cdrom     21,   2 Feb  3 14:09 /dev/sg2
> crw-------    1 root     cdrom     21,   3 Feb  3 14:09 /dev/sg3
> crw-------    1 root     cdrom     21,   4 Feb  3 14:09 /dev/sg4
> crw-------    1 root     cdrom     21,   5 Feb  3 14:09 /dev/sg5
> crw-------    1 root     cdrom     21,   6 Feb  3 14:09 /dev/sg6
> crw-------    1 root     cdrom     21,   7 Feb  3 14:09 /dev/sg7
> crw-------    1 root     cdrom     21,   8 Feb  3 14:09 /dev/sg8
> crw-------    1 root     cdrom     21,   9 Feb  3 14:09 /dev/sg9
> brw-rw----    2 root     cdrom     11,   0 Jul  5  2000 /dev/sr0
> brw-rw----    2 root     cdrom     11,   1 Jul  5  2000 /dev/sr1
> brw-rw----    2 root     cdrom     11,  10 Jul  5  2000 /dev/sr10
> brw-rw----    2 root     cdrom     11,  11 Jul  5  2000 /dev/sr11
> brw-rw----    2 root     cdrom     11,  12 Jul  5  2000 /dev/sr12
> brw-rw----    2 root     cdrom     11,  13 Jul  5  2000 /dev/sr13
> brw-rw----    2 root     cdrom     11,  14 Jul  5  2000 /dev/sr14
> brw-rw----    2 root     cdrom     11,  15 Jul  5  2000 /dev/sr15
> brw-rw----    2 root     cdrom     11,  16 Jul  5  2000 /dev/sr16
> brw-rw----    2 root     cdrom     11,   2 Jul  5  2000 /dev/sr2
> brw-rw----    2 root     cdrom     11,   3 Jul  5  2000 /dev/sr3
> brw-rw----    2 root     cdrom     11,   4 Jul  5  2000 /dev/sr4
> brw-rw----    2 root     cdrom     11,   5 Jul  5  2000 /dev/sr5
> brw-rw----    2 root     cdrom     11,   6 Jul  5  2000 /dev/sr6
> brw-rw----    2 root     cdrom     11,   7 Jul  5  2000 /dev/sr7
> brw-rw----    2 root     cdrom     11,   8 Jul  5  2000 /dev/sr8
> brw-rw----    2 root     cdrom     11,   9 Jul  5  2000 /dev/sr9
> ~$ cdparanoia -d /dev/scd0 1 test.wav -v
> cdparanoia III release 9.7 (December 13, 1999)
> (C) 1999 Monty <monty at xiph.org> and Xiphophorus
> 
> Report bugs to paranoia at xiph.org
> http://www.xiph.org/paranoia/
> 
> Checking /dev/scd0 for cdrom...
> 	Testing /dev/scd0 for cooked ioctl() interface
> 		/dev/scd0 is not a cooked ioctl CDROM.
> 	Testing /dev/scd0 for SCSI interface
> 		No generic SCSI device found to match CDROM device /dev/scd0
> ~$ 
> 
> 
> 
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