[nSLUG] VirtualBox running a 64 Bit Host

George N. White III gnwiii at gmail.com
Wed Feb 3 09:28:13 AST 2010

On Tue, Feb 2, 2010 at 10:08 PM, Sheldon Tower <shtower at eastlink.ca> wrote:

> Hello everyone
> I'm currently trying to run Windows Vista 64 Bit in Ubuntu 9.10 x86_64
> using VirtualBox. I was just wondering if anyone knows if VirtualBox is
> able to emulate a 64bit CPU. A quick google search reviled that VirtualBox
> is capable of running a 64bit guest OS under a 32 bit host OS, but when I
> try to load vista, I get an error stating that my CPU has changed to a 32
> bit CPU. I would much rather run Vista using a virtual machine than always
> rebooting. Any suggestions?

VBox doesn't use CPU emulation, only devices (disk, graphics, etc.) are
emulated.  VBox uses hardware virtualization VT-x (Intel) or AMD-V.

Using KVM on x86_64 linux some  systems require enabling CPU options in
the BIOS -- VBox may need the same.

George N. White III <aa056 at chebucto.ns.ca>
Head of St. Margarets Bay, Nova Scotia

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