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From: Bruce Cran <bruce@cran.org.uk>
To: David Demelier <demelier.david@gmail.com>
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Date: Tue, 01 Mar 2011 09:15:01 +0000
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Cc: freebsd-questions@freebsd.org
Subject: Re: atacontrol spindown 0 does not work
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On Tue, 2011-03-01 at 09:21 +0100, David Demelier wrote:

> But I can still hear the noise every 10 seconds, I think atacontrol does 
> not totally close the APM feature of the device.

atacontrol's spindown setting doesn't change anything in the disk
itself: it just controls a timer in the ad(4) driver which sends a
spindown command when it expires. You'll need to keep using ataidle to
fix the APM value.

-- 
Bruce Cran