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Author Topic: XP pro with 4 gigs of Ram  (Read 1149 times)

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Offline Talvace

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XP pro with 4 gigs of Ram
« on: December 17, 2009, 05:15:23 PM »
I installed 4 gigs of ram on a sytem yesterday which was running xp pro. It would only recognize 3.25 gigs in windows however. Bios sees 4 gigs and so does cpuz. I did some checking on some tech sites and came up with...This

"Windows XP Professional 32-bit is limited to 4GB of address space.  If you have 4GB of RAM installed, it will not show 4GB within Windows.  What you'll probably get is the size of your pagefile subtracted from the 4GB."

Anyone know a workaround?
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Offline Talvace

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Re: XP pro with 4 gigs of Ram
« Reply #1 on: December 17, 2009, 05:18:55 PM »
"The solution is easy, open up your boot.ini file in the root of your system drive.  At the end of the line for your XP installation, add "/PAE" without the quotes.  This enabled the physical address extensions which will allow you to use up to 4GB of memory (the upper limit in XP Pro)."

That was on the same thread. I am going to try it and let you know what happens.
                                    
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Offline bigguy

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Re: XP pro with 4 gigs of Ram
« Reply #2 on: December 17, 2009, 06:14:52 PM »
Hope it works for ya.
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Offline BluenoseJake

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Re: XP pro with 4 gigs of Ram
« Reply #3 on: December 17, 2009, 07:21:39 PM »
What's the processor in it?  I'd upgrade to Windows 7 if possible.
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Offline Talvace

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Re: XP pro with 4 gigs of Ram
« Reply #4 on: December 17, 2009, 10:40:41 PM »
well that was'nt in the budget for this persons build so they got an oem of xp pro but the rig will handle 7 or vista the chip is a 2.8 gig athlon
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Offline Nesa

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Re: XP pro with 4 gigs of Ram
« Reply #5 on: December 18, 2009, 12:33:58 AM »
you'll only get windows to show 3.25GB with PAE. It uses the other 0.75 (750mb) for in house things.
Don't know why it needs so much memory.
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