virtualbox.org

I was wondering if someone could shed any light on a strange situation I encountered.

I recently purchased a new system to do Microsoft certification:

Gigabyte GA-Z77X-D3H mobo
Intel i7-3770 (not i7-3770K)
16 BG RAM
etc.

Installed Win Server2K8R2, and VirtualBox 4.1.20

I then tried to create a 64-machine to install Ubuntu. Oddly, I didn't get the option to select Ubuntu-64-bit as the OS type, but I hadn't used 4.1.20 before, and thought maybe they'd been unified into a single entry. I was able to create the machine, and tried to boot the installation CD.

I received a message that the guest was unable to run, because the CPU only provided i686 emulation, not x86-64. I checked the BIOS, ensured that Intel virtualisation support was turned on, VT-d was turned on, and tried again. Same result.

I installed the Hyper-V role - similar result with less diagnostic info.

I went back to VirtualBox-4.1.18 and tried again. This time VirtualBox froze when I attempted to install the extension pack. No matter what I did, it would never complete the installation. Tried without the extensions, similar result.

Installed Win7 x64, tried again, similar results. VB4.1.20 gives similar error, 4.1.18 won't install extensions.

Can anyone shed any light on what's happening ? I've checked the thread on known driver incompatibilities, but nothing leapt out at me. If wanted I can open a bug report for the 4.1.18 extension problem.

Thansk,

Simon Townsend

You probably need to enable VT-x support in your host PC's BIOS, assuming your CPU supports it. VT-x is required to run any 64bit guest.

Thanks for replying.

Ive checked the BIOS - the Intel Virtualisation capabilities are turned on.

Not sure what else to check.

Simon

Did you try with VT-x on and VT-d off?

Then please post a VM log file for a failed session - post as a zipped attachment please.