disk with high frequency noise only on FreeBSD

Tim Judd tajudd at gmail.com
Wed Jun 10 14:16:39 UTC 2009

if it's the same high-frequency noise like an alarm, like a trouble
indicator..  I had a SCSI that would scream for a few minutes every
hour a long time ago.

Later I kept up reading and it seemed to indicate an overheating
sensor and the alarm trips.

is there adequate cooling for that drive, both over and under it?

On 6/10/09, Jan Henrik Sylvester <me at janh.de> wrote:
> The hard disk of a new computer makes annoying high frequency noises --
> probably while seeking -- on FreeBSD 7.2-RELEASE.
> I booted up a Linux live CD and could not hear anything doing the same
> kind of access. (To test that, I put a ports tree on a FAT partition and
> did 'cat */*/Makefile' from FreeBSD and Linux.)
> Using sysutils/ataidle, I changed the AAM  to different values with no
> effect. (The disk does not support APM.)
> What is different between FreeBSD and Linux in this regard?
> Is the disk probably broken? (I guess I would be out of luck with
> support if I cannot reproduce it on a different OS.)
> The disk is a WDC WD1600AAJS-07PSA0 with firmware 05.06H05.
> Thanks,
> Jan Henrik
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