linux-kernel - Re: Querying the bios from booted linux kernel?

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Message-ID: <477ED3B5.7070009@zytor.com>
Date:	Fri, 04 Jan 2008 16:47:49 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Gene Heskett <gene.heskett@...il.com>
CC:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: Querying the bios from booted linux kernel?

Gene Heskett wrote:
> Greetings;
> 
> Is there a utility that can query the motherboard bios and get a list of the 
> drives it can see?
> 
> Likewise, for the bios extension contained on a pny sata card with a Silicon 
> Image chipset on it?
> 
> I'm trying to cobble up a way for linux to boot from the drive on this sata 
> card, so that the F8 install is completely separated from the FC6 install on 
> a pata drive connected to the mainboard.
> 

No, but if you configure in EDD support (and don't disable it), then the 
kernel will do so on your behalf during early boot.

Unfortunately, it is not trivial to produce a mapping from EDD data to 
real-life disks.  Your best bet is if the disks have an MBR signature, 
in which case the EDD code will capture those; you can then correlate 
them to real disks.

	-hpa
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