virtualbox.org

Hello @,

i'm using a ASUS x64VN.

BIOS setting for VT-d has been enabled, but I'm not able to install x64 guests. The available OS dropdown list do not contain 64bit.

Is VT-d sufficient or do I need definatly VT-x?
Did i forget something here?

Edit: VirtuaBox 4.2.16 installed

Thanks a lot and cheers,
Steve

You need VT-x to run 64bit guests, and Win8-32bit. VT-d is not useful for anything you are likely to need, but if the CPU supports VT-d then it surely supports VT-x as well - though your BIOS may refer to it in some other way, such as "Virtualization Technology".

Thanks - then its CPU related :/

Cheers,
Steven

Make sure also that you don't have any other software already using VT-x, as that too can prevent VBox from being able to use it. I could offer examples except you neglected to mention what host or guest OS's you're using/considering.