The virtual hard disk (VHD) that you choose must have an image of a Windows Server version that can boot from a VHD, for ...

The virtual hard disk (VHD) that you choose must have an image of a Windows Server version that can boot from a VHD, for example, Windows Server 2008 R2. For more information about the operating systems that VMM supports for deployment, see the Deployment Guide. The Hyper-V role in this operating system will be installed by default.