From owner-freebsd-hackers@FreeBSD.ORG  Sun Feb 22 09:56:37 2015
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From: Wojciech Puchar <wojtek@puchar.net>
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To: freebsd-hackers@freebsd.org
Subject: disk powerdown
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how to turn off laptop magnetic drive (SATA) automatic powerdown feature. 
it turns down and up lots of time in my laptop to save a little of power 
and destroy drive much quicker :) and being so annoying.