How do I backup and restore a VHD file? I have Windows Server 2008 (64-bit) with Hyper-V. My WinXP virtual pc works great with the VHD file. I want to have a backup of the virtual pc. I tried to copy the VHD file to another HDD but when I copied it back to the orginal location, Hyper-V will not open the file. I installed Symantec Backup Exec System Recover (server version) and created a full system backup. When I restored the VHD file, Hypver-V will not start my virtual pc. It looks like there are some special permissions set on the VHD file that are lost in the copy/restore process. Stumped!