From owner-freebsd-questions@FreeBSD.ORG Fri Nov 5 02:42:11 2010 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id EAF5E106566B for ; Fri, 5 Nov 2010 02:42:10 +0000 (UTC) (envelope-from xaero@xaerolimit.net) Received: from mail-ey0-f182.google.com (mail-ey0-f182.google.com [209.85.215.182]) by mx1.freebsd.org (Postfix) with ESMTP id 879348FC0A for ; Fri, 5 Nov 2010 02:42:10 +0000 (UTC) Received: by eyb7 with SMTP id 7so1481002eyb.13 for ; Thu, 04 Nov 2010 19:42:09 -0700 (PDT) Received: by 10.213.108.196 with SMTP id g4mr1144044ebp.31.1288924929080; Thu, 04 Nov 2010 19:42:09 -0700 (PDT) MIME-Version: 1.0 Received: by 10.213.15.195 with HTTP; Thu, 4 Nov 2010 19:41:48 -0700 (PDT) In-Reply-To: <4CD36D68.5060100@radel.com> References: <4CD36D68.5060100@radel.com> From: Chris Brennan Date: Thu, 4 Nov 2010 22:41:48 -0400 Message-ID: To: Jon Radel Content-Type: text/plain; charset=UTF-8 X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Cc: justin v , FreeBSD Mailing List Subject: Re: Installed memory today, questions immediately X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 05 Nov 2010 02:42:11 -0000 On Thu, Nov 4, 2010 at 10:35 PM, Jon Radel wrote: > On 11/4/10 10:13 PM, justin v wrote: > >> >> I installed 4GB or memory today. I rebooted and see this, the first line >> after the splash menu thing: >> >> 983040K of memory above 4GB ignored >> >> dmesg shows avail mem amount and I am concerned as well: >> >> real memory = 4294967296 (4096 MB) >> avail memory = 3139940352 (2994 MB) >> >> is a stick bad perhaps? >> >> Start by reading > http://www.FreeBSD.org/doc/en_US.ISO8859-1/books/faq/compatibility-memory.html > > If that doesn't cover it, come back here and include a little information > about the version of FreeBSD and the hardware you're using. > > Justin, where you the one who was getting weird coredumps w/ no data and memtest86 beeped at you? On a side note, mismatched pairs might cause this .... bank's 0-1 need to match each other in speed/size and banks 2-3 have to match each other but banks 0-1 don't have to match banks 2-3 ... (e.g. My desktop has 2 2GB Modules and 2 1GB modules for a total of 6gb (in my case they are the same speed all across (DDR2/800) hth/chris Did you know... If you play a Windows 2000 CD backwards, you hear satanic messages, but what's worse is when you play it forward.... ...it installs Windows 2000 -- Alfred Perlstein on chat at freebsd.org > -- > > --Jon Radel > jon@radel.com > > >