From owner-freebsd-questions Tue Jun 18 11:28:25 1996 Return-Path: owner-questions Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id LAA15401 for questions-outgoing; Tue, 18 Jun 1996 11:28:25 -0700 (PDT) Received: from blanco.sadeya.cesca.es (blanco.sadeya.cesca.es [192.94.163.146]) by freefall.freebsd.org (8.7.5/8.7.3) with SMTP id LAA15390 for ; Tue, 18 Jun 1996 11:28:14 -0700 (PDT) Received: from cyan.infortecnica.es ([193.148.6.29]) by blanco.sadeya.cesca.es (8.6.11/8.7.0) with SMTP id UAA21762; Tue, 18 Jun 1996 20:27:58 +0200 Message-ID: <31C710DC.63E7@sadeya.cesca.es> Date: Tue, 18 Jun 1996 20:26:04 +0000 From: Carlos Amengual Organization: SADEYA X-Mailer: Mozilla 2.01 (Win95; I) MIME-Version: 1.0 To: David Llamas CC: questions@FreeBSD.org Subject: Re: FreeBSD Server with 128 Mbytes RAM References: <31C6D9F1.416C@abaforum.es> Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit Sender: owner-questions@FreeBSD.org X-Loop: FreeBSD.org Precedence: bulk David Llamas wrote: > > Hi!. I have one FreeBSD server with 128 Mbytes of RAM, and FreeBSD only >recognize 64 Mbytes. Hi David ! >From an earlier message (and from the FAQ): ----------------------------------------------------------------------- 8.6. I have 128 MB of RAM but it seems that the system use only the first 64 MB. What's going on ? 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=" Where n is your memory in Kilobytes. For a 128 MB machine, you'd want to use 131072 ----------------------------------------------------------------------- See you -- ========================================================== Carlos Amengual - Sociedad Astronómica de España y América Avenida Diagonal, 377, 2 - 08008 Barcelona - Spain amengual@sadeya.cesca.es - http://www.sadeya.cesca.es/ ==========================================================