Monday, April 16, 2012

Windows 8 in a VM on 2008 R2 Hyper-V

Update:  As of October 9, 2012, the update has been superseded by 2744129. Go to to find that update, where it states the supersedence in the documentation.

This is an interesting patch that someone recently pointed me to:
Apply this patch to your Server 2008 R2 Hyper-V Server so that you can install Windows 8 in a VM.
If you do not apply this patch and you attempt to run Windows 8 within a VM: note the symptoms in the KB article:
  • The Windows Developer Preview or Windows Server Developer Preview virtual machine stops responding.
  • The Windows Server 2008 R2 host computer displays a stop error message and restarts automatically. This behavior brings down all other running virtual machines together with the host computer.
That does not sound good.
So, if you have a Hyper-V server that suddenly crashes and reboots, and you know that someone has downloaded the Windows 8 beta and might be installing it into a VM…  Well, you suddenly have an idea what might be going on.

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