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Date:      Wed, 15 Aug 2007 10:19:21 +0200
From:      Simon 'corecode' Schubert <corecode@fs.ei.tum.de>
To:        =?UTF-8?B?RGFnLUVybGluZyBTbcO4cmdyYXY=?= <des@des.no>
Cc:        freebsd-hackers@freebsd.org, Sven Hazejager <sven-freebsd@hazejager.nl>
Subject:   Re: How to stop attached USB device / send IRP_MN_REMOVE_DEVICE?
Message-ID:  <46C2B709.20604@fs.ei.tum.de>
In-Reply-To: <86r6m5231w.fsf@ds4.des.no>
References:  <07081411265549.-1077952816@somehost.domainz.com>	<20070814030833.49a7a030@soralx> <20070814041736.4c16f41e@soralx>	<07081416114656.-1077948560@somehost.domainz.com> <86r6m5231w.fsf@ds4.des.no>

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Dag-Erling Smørgrav wrote:
> Sven Hazejager <sven-freebsd@hazejager.nl> writes:
>> No, camcontrol does not support this over USB. Windows XP demonstrates
>> it is technically possible, and I do not believe it is fully safe to
>> disconnect the drive (even when unmounted), as the drive then is not
>> able to park its heads, which it DOES do under XP.
> All modern disks (since at least the early 1990s) automatically park
> their heads when they lose power.  There is no need to do it in
> software.

So it seems that windows is switching off the power of the devices when you select "eject".  I can see that some users might feel more comfortable with this behaviour.

cheers
  simon

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