Re: Strange I/O errors for hard-disk driver with bad sectors

[Alan Cox]

On Maw, 2004-11-16 at 16:22, Anton Lavrentiev wrote:
> Or, there are indeed few bad sectors in a row that kernel
> reports by using sector number of the first one, which it
> couldn't read?
> 
> I also used dd to skip to the sectors that it reported as
> unreadable, and read them one by one -- no success, but the
> kernel keeps reporting the same "magic" sector number for
> all these attempts:

Disk sectors in software and disk sectors in the magic internal world of
the disk are not neccessarily the same size so don't be suprised to lose
a bunch.

If you want to read exact sectors without readahead and other
complications
use O_DIRECT I/O

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