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On Wed, Nov 05 2003, Prakash K. Cheemplavam wrote: > 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? Is actual data missing at the end? If yes, I'd say this looks a lot more like a cdrecord problem. -- Jens Axboe - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||
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