Messages in this thread | | | Date | Wed, 05 Nov 2003 10:55:34 +0100 | From | "Prakash K. Cheemplavam" <> | Subject | Re: 2.9test9-mm1 and DAO ATAPI cd-burning corrupt |
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Jens Axboe wrote:
> On Mon, Nov 03 2003, Prakash K. Cheemplavam wrote: > >> Hi, >> >> well I am using k3b0.10.1 and either choosing cdrdao or cdrecord in DAO mode to burn the cd ends up in non-bit identical copies, wheres ion TAO (atleast with my 10x CD-RW I tested) the copy succeded. I tried several times, and always got this issue. >> >> bash-2.05b$ md5sum livecd-2.6_10-23-2003.iso >> f73f3a74239dfe94b322b85fd14a306e livecd-2.6_10-23-2003.iso >> >> TAO: >> bash-2.05b$ md5sum /dev/cdroms/cdrom1 >> f73f3a74239dfe94b322b85fd14a306e /dev/cdroms/cdrom1 >> >> DAO: >> bash-2.05b$ md5sum /dev/cdroms/cdrom1 >> 09e7e2a51af4c64685831513fbac18c2 /dev/cdroms/cdrom1 > > > > Could you please try and cmp the two images, finding out how big the > corrupted chunks are and what kind of data they contain?
After some further investigation I found out, that the data is NOT corrupted, but in a way truncated in DAO mode: When I read out the image from the CD-RW drive, about 5kbyte are missing at the end (and doing several burn, it is always the same amount). Strange enough if I read the DAO burnt disk out by my DVD-ROM, the image can be read out completely! Can you understand this behaviour? I don't think it is a problem of my burner, but rather of the atapi driver?
Cheers,
Prakash
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