virtualization - installing 64bit windows guest on 64bit windows host - VirtualBox vs Hyper-V

04
2013-08
  • Majid Azimi

    I have installed Windows Server 2008R2 and now trying to install multiple Windows Server 2008R2 as guest. My CPU is Intel Core 2 Quad Q8400 @ 2.66GHz on Asus P5P41T-LE mainboard. First I have to tell there is no place in BIOS to enable Intel VT-x. Intel web site says this CPU supports VT-x. When installing guests, VirtualBox says:

    attempting to load a 64-bit application however this cpu is not compatible with 64-bit mode

    But Hyper-V can load 64 bit guest with no problem. I have tested my CPU with Securable tool. It says my CPU does not support VT-x. The question is WTF is happening? Are there two editions of Q8400 with/without VT-x?

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    Related Question

    virtualbox - How do I enable VT-X?
  • Joel Martinez

    I'd like to provide a guest OS with multiple CPUs in VirtualBox. My host machine is a quad core HP Compaq and uses the Intel Core 2 vPro hardware.

    However, when I try to enable the setting in vbox, I get an error that VT-x is not available. Is this something that I can enable somewhere? how do I find out otherwise whether my hardware supports it?

    edit: per suggestions below, I tried using the Securable tool, and it reports that hardware virtualization is "Locked Off". The processors are reported as "Intel Core 2 Quad CPU / Q9400 @ 2.66GHz"


    • Related Answers
  • heavyd

    You can use the tool Securable from Gibson Research to find out if your hardware supports virtualization extensions. If it tells you that your hardware is supported, but not enabled, check the BIOS settings to enable it.

  • arathorn

    Your processor does support VT-X, you'll just need to enable it in the BIOS settings. Reboot your computer and press the specified key on the boot screen to go into the BIOS Setup and enable it.

  • 8088

    Start your PC, press F2, go to the security option and enable VT technology.

  • JamesRyan

    This may not be obvious. Its sometimes called vanderpool technology in the bios without mentioning virtualisation.

  • Virtlink

    As a side note: some laptops require you to shut down and power off the laptop after enabling VT-x in the BIOS, and removing the power cable and battery for 30 seconds. I just today had such a laptop, and found this solution here.

  • Joakim Elofsson

    Make sure your hardware support vt-x check list, then make sure it is enabled in BIOS.