From owner-freebsd-amd64@FreeBSD.ORG Mon Aug 15 22:38:52 2005 Return-Path: X-Original-To: freebsd-amd64@freebsd.org Delivered-To: freebsd-amd64@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 989EE16A41F for ; Mon, 15 Aug 2005 22:38:52 +0000 (GMT) (envelope-from cracauer@schlepper.zs64.net) Received: from schlepper.zs64.net (schlepper.zs64.net [212.12.50.230]) by mx1.FreeBSD.org (Postfix) with ESMTP id BC56E43D60 for ; Mon, 15 Aug 2005 22:38:48 +0000 (GMT) (envelope-from cracauer@schlepper.zs64.net) Received: from schlepper.zs64.net (schlepper [212.12.50.230]) by schlepper.zs64.net (8.13.1/8.12.9) with ESMTP id j7FMclbb099249; Tue, 16 Aug 2005 00:38:47 +0200 (CEST) (envelope-from cracauer@schlepper.zs64.net) Received: (from cracauer@localhost) by schlepper.zs64.net (8.13.1/8.12.9/Submit) id j7FMckKC099248; Mon, 15 Aug 2005 18:38:46 -0400 (EDT) (envelope-from cracauer) Date: Mon, 15 Aug 2005 18:38:46 -0400 From: Martin Cracauer To: Steve Kargl Message-ID: <20050815183846.A99145@cons.org> References: <20050815125657.A92343@cons.org> <20050815172250.GA32804@troutmask.apl.washington.edu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <20050815172250.GA32804@troutmask.apl.washington.edu>; from sgk@troutmask.apl.washington.edu on Mon, Aug 15, 2005 at 10:22:50AM -0700 Cc: Martin Cracauer , freebsd-amd64@freebsd.org Subject: Re: 4 GB RAM showing up as 3, BIOS memory hole and all that X-BeenThere: freebsd-amd64@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Porting FreeBSD to the AMD64 platform List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 15 Aug 2005 22:38:52 -0000 Steve Kargl wrote on Mon, Aug 15, 2005 at 10:22:50AM -0700: > 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. Sorry, I just read every message David posted to amd64@ since January 2004 and I have only seen a reference that it has been explained too often :-) He also said that you only lose the space from 3.5-4 GB, not the full GB, and that the board can re-map that physical memory to > 4 GB. http://groups-beta.google.com/group/fa.freebsd.stable/browse_frm/thread/9dc99b2be7f23d4/2d6de607055b020d?lnk=st&q=freebsd-amd64+david+%224+gb%22&rnum=7&hl=en#2d6de607055b020d Any further hints what to look for? I am sure I did a decent scan of the archive (both local and on google groups). Martin -- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Martin Cracauer http://www.cons.org/cracauer/ No warranty. This email is probably produced by one of my cats stepping on the keys. No, I don't have an infinite number of cats.