Re: Ram
Tony is correct. You need to be running the latest version of your BIOS, and
you need to enable the memory re-mapping in it. This is off by default
(since it would cause a problem for a 32-bit OS) and it isn't an available
option on all current BIOSs, though most seem to have finally caught up with
it.
The problem is that other hardware in your computer needs memory address
space. Since 32-bit Windows is limited to 4 GB of flat memory address space,
those hardware addresses need to be in that 4GB, and they block your seeing
all of your RAM. Since you're running XP x64, the BIOS can do some memory
re-mapping and this allows you to see more of your memory.
--
Charlie.
http://msmvps.com/xperts64
http://mvp.support.microsoft.com/profile/charlie.russel
"sderf" <sderf@discussions.microsoft.com> wrote in message
news:7CBDB7D4-F841-4A47-A233-F30662AE371A@microsoft.com...
>I am using XP Pro 64 OS
> sorry I didn't state that before
> Fred
>
>
>
> "PvdG42" wrote:
>
>> "sderf" <sderf@discussions.microsoft.com> wrote in message
>> news:A3B74069-13D6-45B3-B76E-67FD85E2061C@microsoft.com...
>> >I have 4 gigs of Ram in my computer. When I open the systems floder It
>> >shows
>> > me 3.12 gigs. Why is it not showing the 4 and why am I not able to use
>> > 4
>> > gigs.
>> >
>> > Any help would be great
>> > Thanks
>> > Fred
>> >
>> > computer AMD 64 Duel
>> > Foxconn Win- Fast motherboard
>>
>>
>> You must be running a 32 bit Windows version on your PC, correct?
>> What you are seeing is the amount of memory available to you after your
>> system has used a portion of the 4 gig address space (max that can be
>> seen
>> by 32 bit Windows) for drivers, etc.
>>
>> If you install a 64 bit OS, the drivers, etc. will be mapped to addresses
>> above your 4 gig, and you will have use of all 4 gig for applications,
>> etc.
>> The fact that your hardware is 64 bit is immaterial. The limitation is in
>> your 32 bit OS.
>>
>>