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Date: Tue, 24 Apr 2007 14:05:28 -0400
From: Bill Moran <wmoran@potentialtech.com>
To: "Don O'Neil" <lists@lizardhill.com>
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Cc: freebsd-questions@freebsd.org
Subject: Re: Memory >3.5GB not used?
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In response to "Don O'Neil" <lists@lizardhill.com>:

> I just built a new server with an Athlon 64 x2, 4GB Ram and a
> Gigabyte/Nvidia motherboard.
> 
> When I boot the system up it says on the console that 532888K will be
> ignored.
> 
> Of course it isn't put in any of the log files. Dmesg shows this:
> 
> real memory  = 3724476416 (3551 MB)
> avail memory = 3649908736 (3480 MB)
> 
> Any reason the extra 1/2 GB isn't showing up or usable? Is there something I
> need to specify in the kernel to get to the other 1/2 GB? What if I want to
> install more than 4GB? This mobo supports up to 16 GB... Do I need to go to
> the AMD64 platform to get >4GB?
> 
> I'm running FreeBSD 6.1 i386 SMP kernel.

http://www.freebsd.org/doc/en_US.ISO8859-1/books/faq/troubleshoot.html#PAE

-- 
Bill Moran
http://www.potentialtech.com