CD driver reads causes error by reading too far ahead
Paul Howarth
paul at city-fan.org
Sat Mar 12 10:23:48 UTC 2005
On Fri, 2005-03-11 at 17:35 -0500, D. Hugh Redelmeier wrote:
> summary: reading from a CD block device generates spurious errors near
> the end. These errors prevent reasonable tasks from being done.
>
> I think that this behaviour is new with LINUX 2.6. I'm using Fedora
> Core 3 with kernel 2.6.10-1.770_FC3 on x86_64.
>
>
> I burned a CD from a .iso (you may ignore the details):
>
> I used Fedora core 3's Nautilus desktop to burn (rightclick on .iso,
> choose "Write to Disc...").
> -rw-rw-r-- 1 hugh hugh 582391808 Feb 4 19:37 w2k3sp1_1433_usa_x64fre_pro.iso
>
> I attempt to check the result. I moved the burnt CD to another drive, then
> used the command
> cmp w2k3sp1_1433_usa_x64fre_pro.iso /dev/hdd
> to test the result.
>
> I got what looks like failure:
> cmp: /dev/hdd: Input/output error
See:
https://www.redhat.com/archives/fedora-test-list/2005-
January/msg00453.html
and "man isosize" for workarounds.
Paul.
--
Paul Howarth <paul at city-fan.org>
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