Fun with Virtualbox and Error with 64bit Hardware Acceleration on Lenovo T420

So I was having some fun installing Virtual box on my Backtrack 5 R3 install on a new SSD that I am running for a laptop of mine and found an interesting error.

error: “VT-x/AMD-V hardware acceleration has been enabled, but is not operational. Your 64-bit guest will fail to detect a 64-bit CPU and will not be able to boot. Please ensure that you have enabled VT-x/AMD-V properly in the BIOS of your host computer.”

So this error is simply telling me to enable hardware acceleration in my Bios.  For me I am running this on a IBM Thinkpad Lenovo T420 so I went in and changed the setting.

*PLEASE NOTE* This instruction set is for educational purposes only.  If you follow these instructions and something bad happens to your computer you will need to contact your support staff / warranty center for support.  There is no written guarantee or warranty implied or inferred with this instruction set.  Use at your own risk.

To fix this I did the following:

  • Restarted IBM T420 laptop.
  • Pushed Blue Thinkvantage button when told to do so.
  • Pushed F1 for Bios.
  • Right arrow over to Security Tab
  • Down arrow to Virtualization and pushed the enter key
  • Hit enter on the Intel Virtualization Technology – A Blue Box will appear
  • Down arrow to Enabled, hit Enter. (Enabled should be highlighted in white.)
  • Down Arrow to Intel VT-d Feature and hit enter.
  • a Blue box will appear and down arrow to Enabled (Enabled should highlight white) and hit enter.
  • Push F10 to save and exit.

When I rebooted into Backtrack and ran Virtualbox I was able to install my 64Bit Win7 machine as well as other 64bit OS\’s 🙂

Enjoy.

Kevin

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