OS not seeing new vCPU's

[hgoldman]

This week we went from upgrading from VI 3.5 to vSphere 4. As a part of this I wanted to upgrade some of our XP and Vista VM's to use HW version 7.

I noticed now that it's possible to have 4 vCPU's on both XP and Vista that was previously not possible.

The problem is however that the virtual machines doesn't see the new amount of cpu's. They still say 2 vCPU's and not 4 which is my new setting.

What am I missing here?

Thanks.

Henrik

[Linjo]

Windows XP and Windows Vista is limited to 2cpu:s. That is an OS limitation and not an vSphere limitation.

To get around that you can specify that each vCPU have 2 cores, look in the advanced settings for the VM.

Best regards,

Linjo

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[hgoldman]

Why does it let me set a cpu count higher then? At least in 3.5 it wasn't allowing me to select more than 2 cpu's for OS's like XP and Vista.

Is this a bug?

Also can you point me to how to change the cores?

[malaysiavm]

Not so sure about your statement, i did run 2 x Intel Xeon Quad Core workstation on Windows 7 and Vista with 64 bits and it works and show all the CPU cores in place. you should try thew 64 bits edition

Craig

vExpert 2009

Malaysia VMware Communities -

[hgoldman]

64 bit of what? The OS in the VM or the hypervisor?

My XP machine is 32 bit but the Vista machine is 64 bit. The same action on both on them though.

Thanks.

Henrik