No, Marco, it is not true. There is a difference between unloading the
heads in a controlled way and by an emergency retract. Doing emergency
retract repeatedly is not good, really.
Regards,
David
On Sat, 3 Sep 2011, Marco Peereboom wrote:
Removing power from a running drive won't do anything to it. Just use OpenBSD
and stop looking at worthless diagnostics tools.
On Sep 3, 2011, at 15:41, Steve <scha...@aei.ca> wrote:
Hi all,
I've got a strange situation with OpenBSD 4.9 on a new laptop, an Acer
Aspire 1430 with an Hitachi 500 GB SATA disk, model HTS545050B9A300. When
shutting down, OpenBSD does not spin down the disk, resulting in an "emergency
unload" according to Smart terminology. Until I can resolve this issue, I've
uninstalled OpenBSD from it, since smartctl reports in Slackware that there
have been 17 "Power-off Retract" events so far, which could damage the disk in
the long run. However I would really love to run OpenBSD on my laptop for the
simple reason that I love it so much more than Linux.
Can anyone suggest what I could do to stop this from happening? I found a
discussion on a FreeBSD mailing list identifying and trying to resolve the
exact same thing through kernel recompilations:
http://freebsd.1045724.n5.nabble.com/Re-Spin-down-HDD-after-disk-sync-or-befo
re-power-off-td4043068.html
However, neither using FreeBSD nor patching the OpenBSD kernel would be a
preferred choice for me. I'm sure there must be a simpler solution, maybe a
sysctl setting I'm over-looking...? I've tried both IDE and AHCI modes in the
BIOS with the same results.
Thanks,
Steve Schaller
