Mac Hardware forum

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External HD rapid cycling

by fosterpapillon / December 24, 2010 3:36 PM PST

I have a 500GB LaCie external HD, about two years old, with two partitions. It continually fires itself up (whirring noise as if transferring) and off every 5-10 seconds. Oddly, when I demount it, the problem goes away. presumably it's not just the HD - something on the Mac is winding it up. Any ideas?

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Could be Spotlight indexing
by mrmacfixit Forum moderator / December 24, 2010 10:10 PM PST

Just a guess

It will also fire up if you do something on the Mac that requires all the drives to be available. Something like a Save As command, for instance.


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But why continually?
by fosterpapillon / December 25, 2010 6:08 AM PST

But it never stops and I can go days without a SaveAs. Can I turn Spotlight indexing off to test?

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You can turn it off
by mrmacfixit Forum moderator / December 25, 2010 7:17 AM PST
In reply to: But why continually?

Just go to System Preferences > Spotlight and add that drive to the list of drives that it should not index

It's under the privacy tab


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Fixed itself???
by fosterpapillon / December 25, 2010 11:08 AM PST
In reply to: You can turn it off

The damn thing appears to have stopped doing it now! If it resumes, I'll try adjusting the indexing.

Many thanks mrmac.

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(NT) Welcome
by mrmacfixit Forum moderator / December 25, 2010 10:02 PM PST
In reply to: Fixed itself???

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