Date: Fri, 6 Mar 2009 12:03:00 +0100 From: Bernd Walter <ticso@cicely7.cicely.de> To: Daniel Thiele <dthiele@gmx.net> Cc: Nate Eldredge <neldredge@math.ucsd.edu>, Tobias Blersch <abitos@abitos.org>, freebsd-hackers@freebsd.org Subject: Re: Spin down HDD after disk sync or before power off Message-ID: <20090306110259.GG64172@cicely7.cicely.de> In-Reply-To: <49B037F6.3080001@gmx.net> References: <200903050758.n257wod8088426@lurza.secnetix.de> <49B02211.1010809@abitos.org> <Pine.GSO.4.64.0903051131530.24456@zeno.ucsd.edu> <49B037F6.3080001@gmx.net>
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On Thu, Mar 05, 2009 at 09:37:10PM +0100, Daniel Thiele wrote: > > "Travelstar 5K320 Specification - HTSxxx models v1.0" avilable at > http://www.hitachigst.com/tech/techlib.nsf/products/Travelstar_5K320 > > says in the paragraph "Required power-off sequence": "The required host > system sequence for removing power from the drive is as follows [...]" > whereas the TravelStar 5K100 specifications lists exactly the same steps > but states that it is the BIOS' job to take care of executing them. > > | Perhaps the OP's BIOS for some reason doesn't do this correctly. The BIOS can only do this for known drives. There is always the chance that the kernel knows more drives than the BIOS, since usually people (including me) don't bother to tell the BIOS about more than the boot drive. Also FreeBSD had most recently used the ata controllers and it might be left in a mode, which can't be taken over by the BIOS. -- B.Walter <bernd@bwct.de> http://www.bwct.de Modbus/TCP Ethernet I/O Baugruppen, ARM basierte FreeBSD Rechner uvm.
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