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Date: Mon, 21 Jun 2010 16:30:57 +0300
From: Andriy Gapon <avg@icyb.net.ua>
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To: Andrey Fesenko <f0andrey@gmail.com>
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Cc: Andreas Tobler <andreast-list@fgznet.ch>,
	freebsd-current <freebsd-current@freebsd.org>
Subject: Re: only 3 of 4GB memory available on amd64 8.1-RC1
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on 21/06/2010 11:41 Andrey Fesenko said the following:
> My notebook Toshiba U200-10H
> Install 4Gb(2+2) bios detect 3,... not all
> 
> SMAP
> tipe=01 base=0000000000000000 len=000000000009fc00
> tipe=02 base=000000000009fc00 len=0000000000000400
> tipe=02 base=00000000000e0000 len=000000000000ee00
> tipe=04 base=00000000000eee00 len=0000000000000200
> tipe=02 base=00000000000ef000 len=0000000000011000
> tipe=01 base=0000000000100000 len=00000000cf690000
> tipe=02 base=00000000cf790000 len=0000000000010000
> tipe=02 base=00000000cf7a0000 len=0000000000060000
> tipe=02 base=00000000cf800000 len=0000000000800000
> tipe=02 base=00000000fec00000 len=0000000000018000
> tipe=02 base=00000000fec20000 len=0000000000008000
> tipe=02 base=00000000fed00000 len=0000000000000400
> tipe=02 base=00000000fed14000 len=0000000000006000
> tipe=02 base=00000000fed1c000 len=0000000000074000
> tipe=02 base=00000000feda0000 len=0000000000020000
> tipe=02 base=00000000fee00000 len=0000000000001000
> tipe=02 base=00000000ffb00000 len=0000000000100000
> tipe=02 base=00000000ffe00000 len=0000000000200000

Looks like your hardware+BIOS can/does not do memory hoisting.
786MB of your RAM can not be used.

-- 
Andriy Gapon