On 9 May 2006 at 20:22, Volker Kuhlmann wrote:
> It's probably difficult to fix because the kernel block I/O layer
> doesn't know anything about isofs (and mustn't - could be reiserfs on
> the CD), and the whole CD technology doesn't supply the information of
> what the last recorded block is, or something like that.
So if I "dd if=/dev/cdrom", will the kernel stop accessing the device when the
first read error appears? I thought every block device has a readable block
limit
(determined by drive firmware).
Some older SCSI driver contained:
/*
* The SCSI specification allows for the value
* returned by READ CAPACITY to be up to 75 2K
* sectors past the last readable block.
* Therefore, if we hit a medium error within the
* last 75 2K sectors, we decrease the saved size
* value.
*/
Regards,
Ulrich
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