Messages in this thread |  | | Subject | Re: CD-ROM I/O error: dev 0b:00, sector 843150 | Date | Wed, 29 May 1996 20:42:53 -0400 | From | Johnny Yuma <> |
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Andries.Brouwer@cwi.nl writes: : Herbert Rosmanith: : : : 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. : ... : : 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. : : Interesting how suddenly everybody has the same complaint. : Use the raset that I posted recently to set the read ahead to 0 : and the problems are gone. (But the CD becomes very slow.) : : So, no, neither your disk nor your drive are defective, : it is just the kernel that does not handle errors very elegantly yet.
Oddly enough, When I do this little test, I get kernel panics, Corrupted Stack pages, all sorts of fun stuff. I have an NEC 6Xi on an NCR 53c810. It's fairly reproducable, and only seems to happen if I have the CDROM mounted when I do this, and happens every "once and a while" if I don't have the CDROM mounted.
-J
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