Re: I accidently deleted sr0, now I can't recover cd access

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I don't know if it would work or not, but I would disconnect the power
and ribbon cable on the cd. Then boot up. When it reboots hopefully the
computer will recognizes the change in the hardware. Save the
configuration. Shutdown the computer reconnect the cables and see if it
autodetects the cd and reinstalls itself properly. Again, I don't know
if this would work but it might be worth a try.

On Tue, 2003-12-02 at 21:34, Wayne Schuller wrote:
> hi,
> 
> I foolishly deleted /dev/sr0, and lost access to my cd burner.
> 
> I googled around and recreated the device by doing:
> mknod /dev/sr0 b 11 0 
> 
> I then recreated the symbolic cdrom link:
> ln -s /dev/sr0 /dev/cdrom
> 
> But I cannot mount the cdrom anymore... I get a bunch of strange kernel
> errors on /var/log/messages:
> Dec  3 15:30:39 toottoot kernel:  I/O error: dev 0b:00, sector 64
> Dec  3 15:30:39 toottoot kernel:  I/O error: dev 0b:00, sector 487940
> Dec  3 15:30:39 toottoot kernel:  I/O error: dev 0b:00, sector 486916
> Dec  3 15:30:39 toottoot kernel:  I/O error: dev 0b:00, sector 486692
> Dec  3 15:30:39 toottoot kernel:  I/O error: dev 0b:00, sector 487932
> Dec  3 15:30:39 toottoot kernel:  I/O error: dev 0b:00, sector 486908
> Dec  3 15:30:39 toottoot kernel:  I/O error: dev 0b:00, sector 486684
> Dec  3 15:30:39 toottoot kernel:  I/O error: dev 0b:00, sector 487340
> Dec  3 15:30:39 toottoot kernel:  I/O error: dev 0b:00, sector 486316
> Dec  3 15:30:39 toottoot kernel:  I/O error: dev 0b:00, sector 486092
> Dec  3 15:30:39 toottoot kernel:  I/O error: dev 0b:00, sector 487332
> Dec  3 15:30:39 toottoot kernel:  I/O error: dev 0b:00, sector 486308
> Dec  3 15:30:39 toottoot kernel:  I/O error: dev 0b:00, sector 486084
> Dec  3 15:30:39 toottoot kernel:  I/O error: dev 0b:00, sector 400384
> Dec  3 15:30:39 toottoot kernel:  I/O error: dev 0b:00, sector 399360
> Dec  3 15:30:39 toottoot kernel:  I/O error: dev 0b:00, sector 399136
> Dec  3 15:30:39 toottoot kernel:  I/O error: dev 0b:00, sector 400376
> Dec  3 15:30:39 toottoot kernel:  I/O error: dev 0b:00, sector 399352
> Dec  3 15:30:39 toottoot kernel:  I/O error: dev 0b:00, sector 399128
> Dec  3 15:30:39 toottoot kernel:  I/O error: dev 0b:00, sector 399784
> Dec  3 15:30:39 toottoot kernel:  I/O error: dev 0b:00, sector 398760
> Dec  3 15:30:39 toottoot kernel:  I/O error: dev 0b:00, sector 398536
> Dec  3 15:30:39 toottoot kernel:  I/O error: dev 0b:00, sector 399776
> Dec  3 15:30:39 toottoot kernel:  I/O error: dev 0b:00, sector 398752
> Dec  3 15:30:39 toottoot kernel:  I/O error: dev 0b:00, sector 398528
> Dec  3 15:30:39 toottoot kernel:  I/O error: dev 0b:00, sector 1248
> Dec  3 15:30:39 toottoot kernel:  I/O error: dev 0b:00, sector 1024
> Dec  3 15:30:39 toottoot kernel: UDF-fs: No partition found (1)
> Dec  3 15:30:39 toottoot kernel:  I/O error: dev 0b:00, sector 64
> Dec  3 15:30:39 toottoot kernel: isofs_read_super: bread failed,
> dev=0b:00, iso_blknum=16, block=16
> 
> For what it is worth, my /etc/fstab contains:
> /dev/cdrom              /mnt/cdrom              udf,iso9660
> noauto,owner,kudzu,ro 0 0
> 
> and /dev/scd0 is:
> [[email protected] schuller]$ ls /dev/scd0
> brw-rw--    1 root     disk      11,   0 Sep 15 23:40 /dev/scd0
> 
> When I boot up, it detects the cdrom as normal though:
> Dec  3 15:20:01 toottoot kernel: hdd: attached ide-scsi driver.
> Dec  3 15:20:01 toottoot kernel: scsi0 : SCSI host adapter emulation for
> IDE ATAPI devices
> Dec  3 15:20:01 toottoot kernel:   Vendor: CyberDrv  Model: CW038D
> CD-R/RW    Rev: 120C
> Dec  3 15:20:01 toottoot kernel:   Type:  
> CD-ROM                             ANSI SCSI revision: 02
> Dec  3 15:20:01 toottoot kernel: Attached scsi CD-ROM sr0 at scsi0,
> channel 0, id 0, lun 0
> Dec  3 15:20:01 toottoot kernel: sr0: scsi3-mmc drive: 32x/40x writer
> cd/rw xa/form2 cdda tray
> Dec  3 15:20:01 toottoot kernel: Uniform CD-ROM driver Revision: 3.12
> 
> Can anyone help? I can't find any help on google.
> 
> I don't want to reinstall the whole OS just to get the cd working.
> 
> thanks,
> wayne




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