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Windows Server 2008 Standard 64-bit only sees 4GB of ram, 8GB installed

Posted on 2008-11-07
Medium Priority
Last Modified: 2012-05-05
Hi.  I have a fresh install of Windows Server 2008 Standard Edition 64-bit with 8GB of RAM installed.  The problem is that the OS only detects 4GB of it, whereas the BIOS will detect and show 8GB.  Any help with this is much appreciated, thanks.
Question by:irisbench
LVL 17

Expert Comment

ID: 22908681

Expert Comment

ID: 22908687
Physical Memory Limits: Windows Server 2008
The following table specifies the limits on physical memory for Windows Server 2008. Limits greater than 4 GB for 32-bit Windows assume that PAE is enabled in the boot.ini

see the following link...

second link explains how to modify the boot.ini   http://technet.microsoft.com/en-us/sysinternals/bb963892.aspx

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Expert Comment

by:Darius Ghassem
ID: 22908779
You should be able to view the 8 GB for the 64-bit verison for 2008. Are you sure you install 64-bit verison of 2008?

You can try this command to view the whole 8GB but you should be able to see up to 32 GB

1. BCDEdit /set nx AlwaysOff

2. BCDEdit /set PAE forceenable

3. Reboot

Accepted Solution

irisbench earned 0 total points
ID: 22908913
It turns out it had nothing at all to do with PAE.  There was an option in the BIOS to enable RAS for the RAM.  Once disabled, the full 8GB of RAM began to show up in the OS.
LVL 17

Expert Comment

ID: 22911370
Glad you got it fixed thanks for posting the solution...

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