Re: 1GB RAM is missing.
On Tue, 2007-10-23 at 05:34 -0700, pgega wrote:
> On Oct 22, 10:00 pm, Pasi Oja-Nisula <p...@iki.fi> wrote:
> > On Mon, Oct 22, 2007 at 11:29:37AM -0000, pgega wrote:
> > > Pasi: what was the RAM seend by BIOS , when I use 4 GiB ,bios sees
> > > only 3052 GiB (But the MSI board can hadle up to 8 GiB)
> >
> > > If I would rise RAM number with GRUB (like you, 3900GiB), could I get
> > > more then seen by bios (3052 GiB) ?
> >
> > In my case bios reports 3903 MB. Anyway, the usable limit in my machine
> > is less than what the bios reports.
> >
> > One instruction I have heard about these problems was to make sure
> > that bios setting "memory remap" is on. Whatever that is, my bios
> > doesn't have that.
> >
> > Pasi
> >
> > --
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> OK, I will check this option,
>
> My bios reports two values:
> Physical memory : 4G
> and Usage memory 3G
>
> And, god sake, I do not know how to enable more ram, in other hand
> board supports up to 8G, none of RAM sticks is broken.
>
Hey,
The best explanation of the 3-4GB RAM issue is this page:
http://www.dansdata.com/askdan00015.htm "Ask Dan: What's with the 3Gb memory barrier?"
The author is a writer for a tech mag here in Oz called Atomic.
Summary:
Without some kind of memory remap option you will not get all 4GB
because your computer maps other devices into the ram address space. For
example the biggest culprit is video card memory. If you have a 512MB
card, this takes 512MB of the address space. If you have a dual card
768MB SLI rig then this takes 1.5GB from your space etc, etc.
cheers,
Owen.
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