Windows 2003 Server

Windows Server 2003 32 bit Standard edition can not use memory more than 4 GB. because memory limitaion in this version.


If you want to use memory more than 4 GB minimum you must using Windows 2003 32 bit Enterprise Edition.

when install win2003 Server 32 bit Enterprise edition, you need to setting the PAE - Physical Address Extension for enabling memory more than 4 GB. because The PAE kernel is not enabled by default for systems that can support more than 4 GB of RAM.

for enabling PAE just add the PAE in boot.ini

[boot loader]
timeout=30
default=multi(0)disk(0)rdisk(0)partition(1)\WINDOWS
[operating systems]
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Windows Server 2003, Standard" /noexecute=optout /fastdetect /PAE

more information about PAE can check in this link

Windows Server 2003 32 bit Standard edition can not use memory more than 4 GB.

If you want to use memory more than 4 GB minimum you must using Windows 2003 32 bit Enterprise Edition.