On Mon, 12 Nov 2007 15:29:32 -0000, kimiraikkonen
<kimiraikkonen85@gmail.com> wrote:

>Hi,
>I'm certainly and exactly sure a single bleep-like sound comes from
>HDD when it powers off "SOMETIMES" but not "ALWAYS" . I checked some
>failure-pointing noises from Hitachi website (mine is Seagate) but
>none of them matches with my sound, so it may not be harmful. But i'm
>not sure...
>
>The sound comes only when system(computer) powers down (powers off-
>shutdown) completely. When system powers off HDD gives a bleep-like
>sound as single.
>
>***The sound is NOT similiar with a motherboards error-code beeps.
>This sound is mechanical it seems.
>
>I heard it may be normal. But the sound does NOT come "always."
>
>But i'm not sure, is that sound normal? I use Windows and tried with
>XP and 2000 Pro.
>
>Here is it: (please volume up to hear better)
>(Couldn't find other place to share the file except rapidshare)
>
>http://rapidshare.com/files/69208823/hddsound.wav.html
>
>Thanks.

Sudden deceleration of the motor may cause a beep-like
sound, if it only happens when you turn the system off then
I wouldn't worry about it. A more conservative answer might
be not to risk data when there is anything at all that draws
your attention but I've had a few drives that did make a
similar sound when powering off and none that I recall had
died shortly thereafter (though eventually, I can't recall
as the noise didn't seem to correspond to failure with one
exception which was a drive that made that sound because it
was failing while running and would keep cutting out it's
motor to cause the spin-down instead of it being
deliberately powered off).