Date: Tue, 3 Oct 2006 22:24:47 -0400 From: Martin Cracauer <cracauer@cons.org> To: Roberto Lima <betogigi@gmail.com> Cc: freebsd-amd64@freebsd.org Subject: Re: fbsd 6-stable i386 in server amd64 Message-ID: <20061004022447.GB69704@cons.org> In-Reply-To: <d69013b30609250811v23d27650pe124402657126595@mail.gmail.com> References: <d69013b30609250811v23d27650pe124402657126595@mail.gmail.com>
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Roberto Lima wrote on Mon, Sep 25, 2006 at 12:11:51PM -0300: > Hi all, > I have an server dual opteron dual core, with 4gb ram but freebsd > 6.1-stable i386.. > My system ignores 4gb ram, and shows only 3.3gb. > How I do to build kernel amd64 in i386? its possible? And the option > PAE in kernel i386, works if i compile with kernel i386 in my server? You need two things, not one: 1) the BIOS must allow you to remap the space from 3-4 GB to above 4 GB 2) Once that memory is above 4 GB you either need - a 32 bit kernel with PAE - or a 64 bit kernel to use it A 64 bit kernel is not neccessary if you have working PAE in 32 bit (FreeBSD-6.x does, Win XP SP2 does not). A 64 bit kernel does *not* solve the problem if the BIOS doesn't correctly remap (step 1). Since you seem to have a dual-940 system with 4 cores total that implies a server-class mainboard. These usually have working remap, but a BIOS update might be required. It was for my HDAMB. In the future you want to include information about what mainboard exactly you are using. Martin -- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Martin Cracauer <cracauer@cons.org> http://www.cons.org/cracauer/ FreeBSD - where you want to go, today. http://www.freebsd.org/
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