PAE (Physical Address Extension) allows you to enable your computer to use up to 4GB of RAM. So, all your have to do is to enable PAE on your system. Note that PAE is automatically enabled if:
- your server has hot-add memory ability (ability to add more memory without shutting down the server !!)
- data execution prevention (DEP) is enabled
To enable PAE:
Windows Vista/Windows 7
Use the following BCDEdit /set command to set the pae boot entry option:
bcdedit /set [{ID}] pae ForceEnable
IF DEP is enabled, PAE cannot be disabled. Use the following BCDEdit /set commands to disable both DEP and PAE:
bcdedit /set [{ID}] nx AlwaysOffNote that under Windows 7, PAE should be enabled by default - but there could be also cases when it isn't. So, better enable it manually - "just in case".
bcdedit /set [{ID}] pae ForceDisable
Windows Server 2003 and Windows XP/2000
To enable PAE, use the /PAE switch in the Boot.ini file. To disable PAE, use the /NOPAE switch. To disable DEP, use the /EXECUTE switch.
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I did some investigations to see if there is any way to clearly see if PAE is enabled or not. It seems there is no way to do it.
:(
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