With the correct BIOS settings enabled on a E8500 processor (see
http://processorfinder.intel.com/ for the processors that support EM64T, Virtualisation and Execute Disable which is needed for Hyper-V to work), and with them and the Trusted Execution property set to On in the BIOS I got the following errors with Hyper-V RC1 on Windows 2008 Enterprise Server RTM (running Server Core):
- Hyper-V launch failed; Either VMX not present or not enabled in BIOS.
- Hyper-V launch failed; at least one of the processors in the system does not appear to provide a virtualization platform supported by Hyper-V.
Fixed this by rebooting and pressing F2 to enter the BIOS and disabling the following settings
- Security > Execute Disable (set to Off)
- Performance > Virtualization (set to Off)
- Performance > VT for Direct I/O Access (set to Off)
- Performance > Trusted Execution (set to Off)
Press Esc and save settings. When the server reboots do a hard power off. Power on, and then in the BIOS again ensure that the following is set:
- Security > Execute Disable (set to On)
- Performance > Virtualization (set to On)
- Performance > VT for Direct I/O Access (set to On)
- Performance > Trusted Execution (set to Off)
Press Esc and save settings. Hard power off again once the server reboots. Turn power on and let computer boot normally.
At this point I got an Hyper-V error in that the entries in the event log above did not appear anymore, but were replaced by an error indicating that Hyper-V was not installed.
So I removed Hyper-V by running:
- ocsetup Microsoft-Hyper-V /uninstall
and reboot.
Reinstall Hyper-V by downloading the latest build and install it using:
or if you have the latest build already installed, then reinstall using:
- ocsetup Microsoft-Hyper-V
Labels: 2008, bios, dell, hyper-v, optiplex, server core, virtualisation
permalink posted by Brian Reid : 8:55 AM
1 comments 
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