Q. Is it true that Hyper-V in Windows 2008 R2 supports hibernate and sleep?

A. This is true and false. With Windows 2008 R2, if you have a configuration that sets the hypervisor not to run, then you can now set the machine to hibernate. If the hypervisor is enabled, you can't hibernate. To create a boot option without the hypervisor loaded perform the following:

C:>bcdedit /copy {current} /d "Windows 2008 R2 - No HV"The entry was successfully copied to {857781f4-1ff6-11de-bc04-bf483ae46187}.C:>bcdedit /set {857781f4-1ff6-11de-bc04-bf483ae46187} hypervisorlaunchtype offThe operation completed successfully.

Note that the ID used in the second command should be the ID returned from the first command. You may also need to run "powercfg -hibernate on" to enable they hibernate capability.

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