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Subject: Re: How to prevent HDD spin-down.
To: freebsd-questions@freebsd.org
References: <99f2e64c-577c-20e1-b595-9b8391efaf8e@gmail.com>
From: Matthias Meyser <meyser@xenet.de>
Organization: XeNET GmbH, Clausthal-Zellerfeld
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Date: Tue, 6 Mar 2018 10:43:06 +0100
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Am 06.03.2018 um 03:37 schrieb J.B.:
> Hey. I purchased a new WD laptop hard disk drive, but it keeps spinning down 
> and parking its heads after 25 seconds of inactivity. How can I disable that 
> feature or extend the timeout to something less idiotic? I checked the BIOS, 
> but there's no setting for it. I booted into a Linux (Debian-based) OS 
> duel-booting on the same disk, and the disk doesn't spin down, so either 
> Linux is doing something to override that feature, or FreeBSD is doing 
> something to enable it (possibly a package I installed). Thanks.
> 

Perhaps

camcontrol standby -t0 /dev/ada0
camcontrol idle -t0 /dev/ada0

CU
    Matthias