I'm also having the same problem with an IBM intellistation.

Did anyone figure this out?

If so please email me at chris@ofdny.com

"nicholas ferguson" wrote:

> I have have a system with XP pro on it. I have 4GB of ecc memory
> installed. I have rebuilt this system many times to test this problem.
>
>
> XP pre-sp2 sees the 4gb of memory just fine with a /PAE switch.
> As soon as SP2 is installed it will no longer see the 4GB of memory
> only 3gb.
>
> I know that sp2 added the noexecute bit and have read about how systems
> that support hardware based noexecute have /PAE forced on.
>
> http://www.microsoft.com/technet/pro.../sp2mempr.mspx
>
> My system runs dual Xeons 3.4 and does support hardware based
> noexecute.
>
> I have turned off that feature through the bios and put the flag of
> AlwaysOff in the boot.ini.
> This does not help.
>
> I still can't see the 4gb, it will only see 3gb.
>
> I have tried adding numerous combination of switches in the boot.ini
> but nothing gets beyond 3GB when sp2 has been installed.
>
> I have some friends who have sp2 installed and run 4gb of memory just
> fine but I know for certain that when sp2 is installed on my
> workstation it will only be able to see 3GB in the OS.
>
> I have search the Microsoft's premier support site many times hoping to
> find something about this and yet there is nothing listed.
>
> this is obviously an issue with xp and sp2. It is not a matter of
> wrong flags in the boot.ini like I have read sooo many posts on
> different websites claim is the solution.
>
> I also have the latest bios on my workstation dated 08/30/05.
>
> Nicholas Ferguson
>
>