a modest request
Kyrre Ness Sjobak
kyrre at solution-forge.net
Fri Dec 17 22:47:22 UTC 2004
fre, 17.12.2004 kl. 16.26 skrev Arjan van de Ven:
> On Fri, 2004-12-17 at 10:05 -0500, gslink wrote:
> > The problem with bad sectors is not with sectors that show a write check
> > but with those that don't show a write check but are bad. The write
> > check on most hard drives is very simple and consists only of parity.
>
> actually it's a far more sophisticated ECC like code that even allows
> single bit errors to be automatically corrected.
>
> And disks do constant "signal strength" measurements and such and
> relocate sectors before things go bad.
>
> Remember that before using a sector on a new partition, you *always*
> write to it (in a filesystem at least), and that's where the bad
> situation will be detected *and remapped*.
>
> If your disk is beyond remapping, the smart daemon (on by default) will
> send you a nice mail saying that your disk is going bad.
>
Very, VERY many people never touches root's mail command...
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