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From: =?utf-8?Q?Dag-Erling_Sm=C3=B8rgrav?= <des@des.no>
To: Bakul Shah <bakul@bitblocks.com>
References: <86wrry1hwv.fsf@ds4.des.no>
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Date: Wed, 11 Aug 2010 10:26:58 +0200
In-Reply-To: <20100810225012.A8CE35B67@mail.bitblocks.com> (Bakul Shah's
	message of "Tue, 10 Aug 2010 15:50:12 -0700")
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Cc: geom@freebsd.org, hackers@freebsd.org
Subject: Re: Support for WD Advanced Format disks
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Bakul Shah <bakul@bitblocks.com> writes:
> After poking around some, it seems ATA/ATAPI-7 Identify Device word
> 106 bit 13 is set to 1 and bits 0-3 are set to 3 (for 2^3 or 8 LBAs
> per sector) for a 4KB sector size (pin 7-8 jumper on a WD AF disks
> presumably changes this setting to 0,0).  See page 121 of Atapi-7
> volume 1 (google for ata-atapi-7.pdf).

Yes.  We already support this.  The problem is that WD's Advanced Format
disks (or at least some of them) lie.

DES
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Dag-Erling Sm=C3=B8rgrav - des@des.no