On Mon, Jan 31, 2011 at 10:34:19PM +1100, James Harper wrote:

> I don't think there were any bad blocks, it appeared to be a motor
> failure. I could hear the motor try and spin up but not quite get
> there.  When I tried it again later it didn't even do that.

badblocks will often find motor failures as well.  If the motor is
going to fail, it will often fail very early in the life of the disk
(i.e. the first part of the bathtub curve.)  By spinning up the disk
for the badblocks test and spinning it down implicitly afterwards, you
are exercising a number of failure modes before you rely on the disk.

- Morty

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