On Sunday 03 January 2010 17:10:08 Hugo Mills wrote:
> On Sun, Jan 03, 2010 at 04:41:00PM +0000, Samuel Penn wrote:
> > Hi all,
> >
> > Does anyone have any ideas what needs to be done to get Linux to
> > recognise 4GB of RAM? I've got a box running 64bit Gentoo Linux
> > (AMD), which I've just upgraded to 4GB, however Linux is only
> > showing 3GB available (according to top).
> >
> > The machine's BIOS is displaying 4GB installed, it's just Linux
> > that only seems to see 3GB.
>
> First thing from the brown-paper-bag list: are you certain you're
> running a 64-bit kernel? Check with uname -a
See previous reply. I'm definitely running everything compiled against
64 bit.
> The next thing is: is your BIOS capable of running with a memory
> hole at the 3GiB mark? If so, enable that.
I'm about to reboot to check the BIOS setup.
Sam.
