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Date: Wed, 09 Apr 2008 17:57:15 -0400
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To: Francis Moreau <francis.moro@gmail.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Disk geometry from /sys
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Francis Moreau wrote:
> Hi,
> 
> I'm trying to know the geometry of my hard disk from a bash script
> and that's the reason I'm looking in /sys. The reason is that I'd like
> to figure out the size of a cylinder without doing a
> ioctl(bdev, HDIO_GETGEO, &geo)

$ DEV=/dev/sda
$ GEOM="`/sbin/hdparm -g $DEV | awk '{print $3}'`"
$ echo $GEOM
19457/255/63
$