From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mark Lord <liml@rtr.ca>
Subject: Re: Loud "pop" coming from hard drive on reboot
Date: Wed, 18 Apr 2007 19:36:23 -0400
Message-ID: <4626AB77.20709@rtr.ca>
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To: Tejun Heo <htejun@gmail.com>
Cc: Chuck Ebbert <cebbert@redhat.com>, emisca <emisca.ml@gmail.com>, Jan Engelhardt <jengelh@linux01.gwdg.de>, Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>, linux-kernel <linux-kernel@vger.kernel.org>, linux-ide@vger.kernel.org, Adrian Bunk <bunk@stusta.de>, Andrew Morton <akpm@osdl.org>, Stephen.Clark@seclark.us

Tejun Heo wrote:
> 
> 1. shutdown(8) issues SYNCHRONIZE_CACHE followed by STANDBY_NOW
> 2. kernel shutdown starts
> 3. libata shutdown issues SYNCHRONIZE_CACHE
> 4. power goes off

Okay, after some experimentatino, it's the STANDBY_NOW that
is causing the Power-Off_Retract_Count to increment on my machine.

Tell me again why we think we need to issue that command ?

Thanks.