4 GB RAM showing up as 3, BIOS memory hole and all that

[Steve Kargl]

On Mon, Aug 15, 2005 at 12:56:57PM -0400, Martin Cracauer wrote:
> 
> I have a Dual Opteron board with 4x 1 GB RAM.  The memory count in the
> BIOS goes up to 640 KB + 3072 MB, and FreeBSD says it sees 3 GB.

(snip)

> Any way to get my GB back?

This should be a FAQ.  No, you can't get it back.
David O'brien has explained this more than once in 
the freebsd-amd64 list.  Unfortunately, I don't
have a handy URL for you to read.  I suggest scanning
the list for posts by David in the Feb to May timeframe. 

-- 
Steve