Date: Tue, 2 Dec 2008 10:50:53 +0000
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: "David Ellingsworth" <david@identd.dyndns.org>
Cc: "Mikael Pettersson" <mikpe@it.uu.se>, linux-ide@vger.kernel.org,
       linux-kernel@vger.kernel.org
Subject: Re: Promise PDC20376
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> A small update to this. It seems the above mentioned interrupt fails
> somewhere around the 128GB boundary. Interrupt 13h, AH=42 uses a 64
> bit sector address and should be capable of addressing the entire
> drive. For a SATA controller, this limitation seems relatively
> arbitrary. For IDE controllers, a limitation such as this is
> apparently common.

137GB I would imagine. That is the point at which LBA48 commands must be
used not LBA28 and presumably their BIOS code only supports old format
commands
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