kondra

I think because you are an "Expert Member" you are right. :jau: Quote from MS:

To end all the speculation about a Windows XP Professional supporting more than 4 GB of physical RAM I patched the kernel. For the test I used the kernel file ntkrpamp.exe from XP SP1, which is the multi processor kernel with enabled physical address extension. Pay attention that we can not use XP SP2 or SP3, because Microsoft removed the RAM support since SP2.