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Date: Mon, 07 Nov 2005 15:17:34 -0700
From: Scott Long <scottl@samsco.org>
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To: Claus Guttesen <kometen@gmail.com>
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Cc: freebsd-amd64 List <freebsd-amd64@freebsd.org>
Subject: Re: amd64 does not see all 4 GB RAM on tyan GT24
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Claus Guttesen wrote:

>>>Just received a Tyan GT24 with a S2891 board. In the
>>>bios-setup-utility the board has 4 GB RAM, but when FreeBSD 6.0
>>>release boot it only recognizes 3 GB. Dmesg:
>>
>>Please send the verbose boot output, specifically the lines that
>>mention 'SMAP'.
> 
> 
> Did a verbose boot but no lines mentioning SMAP. Verbose dmes is attached.
> 
> regards
> Claus

Not sure why the SMAP lines didn't get printed out.  Anyways, check your
BIOS for a setting related to PCI-Express.  Some motherboards allow you
to reclaim the 256MB hole that PCI-Express consumes.  That should help 
your problem at least a little bit.

Scott