Windows 7 Not Seeing all Mac Pro Cores

[rjheys]

I have a 2009 2.26 Octo Mac Pro and I just installed Windows 7 x64 and it is only reregistering one of my two processors. It shows 4 Cores and 8 Logical Processors, how do I get win 7 to use both my CPUs or is it limited to only one at a time?

[rjheys]

http://att.macrumors.com/attachment.php?attachmentid=205541&stc=1&d=1259764918

http://att.macrumors.com/attachment.php?attachmentid=205542&stc=1&d=1259764918

[peskaa]

Home Premium only sees 1 CPU, and hence 4 cores. To get all 8 you will need Professional or Ultimate.

[oculus42]

Get Windows 7 Pro or Ultimate.

Home Premium supports one processor with up to four cores. Pro and Ultimate support two processors, up to eight cores, IIRC.

[rjheys]

Ok thanks.

[balamw]

NOTE: You can use an anytime upgrade to do this and don't have to go out and buy a whole new license. HP to Professional is about $80.

http://windows.microsoft.com/en-us/windows7/Upgrade-to-another-edition-of-Windows-7-by-using-Windows-Anytime-Upgrade

B