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SubjectRe: 2.4.27rc2, DVD-RW support broke DVD-RAM writes
Date
 > http://marc.theaimsgroup.com/?t=109043580300002

Mathias K:

Hi. Have you tried only PATAPI DVD-RAM drives? Only via ide-cd.o,
rather than via ide-scsi.o?

Me, as yet I have no PATAPI DVD-RAM, so instead I tried a USB DVD-RAM
drive, specifically the "HL-DT-ST" "DVDRAM" "A100" drive.

Agreed, 2.4.27-rc4 fails to write. But for me, 2.4.26 also fails to
write.

For USB DVD-RAM in 2.4, I think the root evil is the dmesg complaint
"kernel: sr0: scsi-1 drive", which in turn arises from the host
substituting vendor-specific op x1A for MMC op x5A "MODE SENSE (10)".
I'm guessing PATAPI DVD-RAM breaks over some other issue, found in the
drivers/ide/ide-cd.c of ide-cd.o rather than in drivers/scsi/sr.c of
ide-scsi.o.

Pat LaVarre
http://linux-pel.blog-city.com/read/754579.htm

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