On Monday 04 May 2009 18:29:26 L. V. Lammert wrote:
> At 06:06 PM 5/4/2009 -0400, STeve Andre' wrote:
> >The best way is to get a new disk.  I'm serious.  Disks are cheap enough,
> > and the value of whats on them is high enough that if you think its
> > going, get a new one.  Even if this is a hobby system, I'd do that.
>
> And I'm serious too - how many hard drives to you throw away before you
> realize that might not be the problem?
>
> >There is disk testing software from the OEMs you can use.
> >
> >But if you think its acting weird don't trust it.
>
> That's why I'm looking for a way to gather some hard data.
>
>          Lee

I have a pile of disks that I suspect.  Looking at the drawer, I see 8
of them.  As I have time I test them, usually with dd:

   dd if=/dev/sd1c of=/dev/null bs=64k

and try that a bunch.  Usually I shake loose a few errors after a 
while.  And of course, listen to them.  Hearing many clicking
noises for recalibrates in a row is another sign of impending
death.

For laptop disks I've used IBM/Hitahi's drive fitness test, and
that usually works well, but earlier this year it gave a drive a
clean bill of health, and the disk died about 2 weeks later.

--STeve Andre'

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