Re: CD-ROM I/O error: dev 0b:00, sector 843150

Steffen Grunewald (steffen@gfz-potsdam.de)
Wed, 29 May 1996 15:54:42 +0200 (MET DST)

"Herbert Rosmanith writes"
|>
|>
|> hi,
|>
|> does the above message mean that the cdrom (the disk, not the drive)
|> is defective ?
|> I get a lot of this messages after dd if=/dev/scd0 of=/dev/null:
|>
|> scsi0 channel 0 : resetting for second half of retries.
|> SCSI bus is being reset for host 0 channel 0.
|> SCSI CD error : host 0 id 4 lun 0 return code = 18000002
|> Current error sr0b:00: sense key Medium Error
|> Additional sense indicates Random positioning error
|> CD-ROM I/O error: dev 0b:00, sector 843136
|> scsi0 channel 0 : resetting for second half of retries.
|> SCSI bus is being reset for host 0 channel 0.
|> SCSI CD error : host 0 id 4 lun 0 return code = 18000002
|> Current error sr0b:00: sense key Medium Error
|> Additional sense indicates Random positioning error
|> CD-ROM I/O error: dev 0b:00, sector 843138
|>
|> the bad thing is that I cannot ^C the process doing dd nor kill -9 it,
|> so it's stuck somewhere in the kernel. or do you have to wait for
|> some minutes ? (sync, df will hang from now on...)
|>
|> /herp
|>
|>
|>
There was a bug report in the 80's of 1.3 stating that (only) SCSI
CDs were reporting a wrong capacity (a off-by-one error somewhere in
sr.c). Thought it was corrected at least in the 90's ...

Linus ?

-- 
Steffen Grunewald |  email steffen@gfz-potsdam.de |  fax (+49)-331-8877 520
GeoForschungsZentrum Potsdam, Telegrafenberg A17, D-14473 Potsdam,  Germany
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