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From: Ollivier.Robert@eurocontrol.fr (Ollivier Robert)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: v2.1.5 Doesn't Recognize 64+ Megs RAM
Date: 13 Dec 1996 11:39:08 GMT
Organization: Eurocontrol EEC, Bretigny, France
Lines: 31
Message-ID: <58rf8s$vs$1@polaris.eurocontrol.fr>
References: <01bbe823$c6460e80$bf60d4cf@sidewinder>
NNTP-Posting-Host: caerdonn.eurocontrol.fr
X-Newsposter: Pnews 4.0-test48 (3 Dec 96)
Xref: euryale.cc.adfa.oz.au comp.unix.bsd.freebsd.misc:32510
[courtesy cc of this posting sent to cited author via email]
In article <01bbe823$c6460e80$bf60d4cf@sidewinder>,
Damien Thorn <damien@digicity.net> wrote:
> We went had 64 Meg, and added 32 Meg additional. Motherboard BIOS
> recognizes all 98 Meg on boot...
>
> What should I check / do?
Check the FAQ ?
7.6. I have 128 MB of RAM but the system only uses 64 MB.
Due to the manner in which FreeBSD gets the memory size from the BIOS, it
can only detect 16 bits worth of Kbytes in size (65535 Kbytes = 64MB). If
you have more than 64MB, FreeBSD will only see the first 64MB. To work
around this problem, you need to use the kernel option specified
below. There is a way to get complete memory information from the BIOS, but
we don't have room in the bootblocks to do it. Someday when lack of room in
the bootblocks is fixed, we'll use the extended BIOS functions to get the
full memory information...but for now we're stuck with the kernel option.
options "MAXMEM=<n>"
Where n is your memory in Kilobytes. For a 128 MB machine, you'd want to
use 131072
--
Ollivier ROBERT -=- Eurocontrol EEC/TS -=- Ollivier.Robert@eurocontrol.fr
FreeBSD FAQ: <URL:http://www.FreeBSD.org/FAQ/>