[Techtalk] rebooting bad?
Beth Johnson
linux.chick at verizon.net
Fri Aug 23 16:21:55 EST 2002
On Thu, 2002-08-22 at 18:01, Kathryn Andersen wrote:
> This apparently ensures that the head doesn't stick, because you've
> restarted the disk while it's still warm, thus ensuring that the gunk
> that might cause the head to stick to the disk, gets scraped off.
> And then it's safe to power down the disk.
Well, it's certainly not the head actually sticking to the disk! A
particle of dust on the disk is enough to crash the heads. The inside
of the hard drive is clean & sealed.
Now, the thermal stress is the greatest when the machine is warming up
after power on. Like a light bulb that burns out when you turn it on
because the filament overheats, the computer components experience a
similar extreme stress. It's not a warm reboot that's bad from the
hardware standpoint, but a cold one. This is most likely what did in
Kathryn's drive.
And yes, a long uptime is really cool, but also could be a sign that
your kernel is really old! ;-)
regards,
Beth
about to install a brand-spankin' new kernel
and remake my video drivers
--
/\/\ Beth Johnson
/ o o\ Cosmic Wonderer
( / ^^\) Springfield, MA USA
\ M_M/ "Ruling a country is like cooking a small fish--
you have to handle it with care."--Lao Tzu
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