4 Gigs RAM

[Guest]

I bought some months ago a machine with an Intel 64 bit dual core processor
3.40 ghz and 4 gb Ram with Win Xp 64 bit Pro. I have some problems with the
RAM. the machine seems to read only 3.40 Gb Ram. Is it right? Doesn't Win XP
read 64 or 128 Gb ram? and if is not right how can I fix the problem.
PS: the MotherBoard is an Intel D945

thankyou

Marco

 

[Guest]

You have to enable support for greater than 3GB RAM in your boot.ini file.
File is hidden, read only, and write protected by default. Remove attributes
using attrib using the command prompt(Start > Run > cmd > ok):


attrib c:\boot.ini -s -h -r


Open the boot.ini file with a text editor like Notepad, and add the switch
"/3GB"
to the end of the line that looks like this:


Multi(0)disk(0)rdisk(0)partition(1)\Windows= "Microsoft Windows
Professional" /fastdetect


so that it looks like this:


Multi(0)disk(0)rdisk(0)partition(1)\Windows= "Microsoft Windows
Professional" /fastdetect /3GB


Save the changes, and reset the attributes at the command prompt: attrib
c:\boot.ini +s +h +r

This information was taken from:
http://snipurl.com/1avpv

Good Luck,

Joe

Kemco ITP

 

[Bob I]

You will likely get a better answer in the 64bit newsgroup. This one is
the 32 bit on.

 

[Curt Christianson]

Hi Marco,

This article may be of some help, written by MS-MVP Tim Slattery:

4 GB RAM in Windows XP
http://members.cox.net/slatteryt/RAM.html


--
Curt

http://dundats.mvps.org/
http://www.aumha.org/


|I bought some months ago a machine with an Intel 64 bit dual core processor
| 3.40 ghz and 4 gb Ram with Win Xp 64 bit Pro. I have some problems with
the
| RAM. the machine seems to read only 3.40 Gb Ram. Is it right? Doesn't Win
XP
| read 64 or 128 Gb ram? and if is not right how can I fix the problem.
| PS: the MotherBoard is an Intel D945
|
| thankyou
|
| Marco
|
|

 

[Tim Slattery]

I bought some months ago a machine with an Intel 64 bit dual core processor
3.40 ghz and 4 gb Ram with Win Xp 64 bit Pro. I have some problems with the
RAM. the machine seems to read only 3.40 Gb Ram. Is it right? Doesn't Win XP
read 64 or 128 Gb ram? and if is not right how can I fix the problem.
PS: the MotherBoard is an Intel D945

Are you absolutely certain you're running the 64-bit version of XP
Pro? I'd expect this behavior from the 32-bit version, but not from
the 64-bit version.

I don't know a whole lot about 64-bit XP. I believe it should support
up to 128GB RAM, depending on your hardware. I found this document:
http://h20331.www2.hp.com/Hpsub/downloads/RAM_Allocation_w-WinXP_HP_MWP_x64.pdf,
which talks mostly about not being able to actually use 4GB in a
32-bit system. It also says this:

<QUOTE>
In contrast, some 64-bit capable systems use 32-bit chipsets, limiting
physical memory addressing to the 4 GB limit even though Windows XP
XP Professional x64 Edition is installed. The HP xw4200 is such a
system (like all systems based on the Intel 925 Express chipset) and
it continues to typically allocate between 3 and 3.4 GB of RAM. The
benefit is that the system is able to take advantage of larger virtual
memory and process sizes.
</QUOTE>

Could this apply to you?

 

[Guest]

Thanx to everybody

Marco

 

[Mike]

No, that is irrelevant. That switch tells the OS how to use the 4GB Virtual Memory (not the real
memory which is his problem). I suspect, like others here, that he is really using 32 bit XP and
the memory is lost to the PCI subsystem. There have been many messages here on that
issue.