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Windows 2003 server R2 Enterprise not reconized 5 GB RAM after install

Posted on 2006-07-11
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Last Modified: 2008-01-09
I have A Hp Server Prolient  380 G4. 5GB RAM 3.4 GHz Processor (double) 72 GB Hard drive
Every time i  install Windows 2003 server R2 Enterprise (32- bit) , It only recognized 3.5 GB RAM but if i install a Windows 2003 server R2 Enterprise 64-bit its OK .

System Requirements by microsoft


Microsoft Windows Server 2003 R2 Enterprise Edition
Component Requirement

Computer and processor

 133-MHz processor required; 550-MHz recommended; up to eight processors supported on one server
 

Memory

 128 MB of RAM minimum required; 256 MB or more recommended; 64 GB maximum
 

Hard disk

 1.25 to 2 GB of available hard disk space
 

Drive

 CD-ROM or DVD-ROM drive
 

Display

 VGA or hardware that supports console redirection required; Super VGA supporting 800 x 600 or higher-resolution monitor recommend

What do i need to solve the problem of missing RAM?

Thanks
 
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Question by:alfama
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oBdA earned 500 total points
ID: 17085416
You need the /pae switch in the boot.ini (but why don't you just stay with the 64bit version?).
A description of the 4 GB RAM Tuning feature and the Physical Address Extension switch
http://support.microsoft.com/?kbid=291988

Intel Physical Addressing Extensions (PAE) in Windows 2000
http://support.microsoft.com/?kbid=268363

Make sure you install the hotfix described here before you add the switch:
Data is corrupted when PAE is enabled on a Windows Server 2003-based computer
http://support.microsoft.com/?kbid=834628
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by:alfama
ID: 17088525
I want to install WSUS server( IIS,.NET Framework) is not compatible   with ver 64-bit ver.
Thanks , Thanks work.
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