Windows 64bit Ultimate Host cannot run 64bit guest OS...

[cbruiners]

Hi All,

I am lucky enought to get a Signature edition of Windows 7 Ultimate (retail), I have installed the 64bit version sucessfully as the host OS on my Toshiba latop (T5500, 4GB RAM).

I have created a VM thats to host Windows 2008 64bit server, but every time I try and install the server it comes up with the error;

Attempting to load a 64-bit application, however this CPU is not compatible with 64-bit mode

I have ACPI, IO APIC, PAE/NX and VT-x/AMD-V enabled
Nested paging is disabled (and greyed out so i cannot change the setting)

Can anyone shed light on why the guest OS isn't seeing my CPU's 64bit extensions?

Cheers

Carl

[dmcgraw]

See VirualBox FAQ for requirements to run 64 bit Guests.

[Gibraltar]

Hi,

There seem to be at least 4 versions of your CPU T5500, all of them support x64 but only one supports Intel Virtualization Technology, a requirement to run x64 OS's.

You can check with CPUID if your CPU supports Virtualization Technology.

[Sasquatch]

A laptop, well, my money is on the fact that your CPU is not VT-x enabled. And even if it would be, like my T2300, there is quite a big chance that your motherboard/BIOS doesn't support it. If you don't have the feature in the BIOS, then don't bother checking the CPU.