I am somewhat hesitant to ask this as it might make me look stupid, but...When I'm done using Virtual PC and a virtual machine running Windows XP Pro under Vista 64 Home Premium as the host os, often I've not made any significant changes at all to the virtual machine's hard drive.Anything I save gets saved to a network share on my Win98 file/print server and backed up to a flash drive.Assuming I don't make any configuration changes or anything else that I want to keep, is there any reason to bother shutting it down properly when I have "undo disks" enabled?Any reason I can't save time by hitting the "X" button and choosing "turn off and delete changes"? I'm aware of patches, but I have it set to notify me of patches, and I can have it do the patches when it is convenient for me and I always commit the changes when I install the patches. I'm not using it for anything but my night school classes at this time, so there isn't much worth protecting on the virtual machine, and I usually write the actual papers on the host OS. I just use the VM to play around with the admin tools in an environment where I can easily fix a massive screw-up without spending hours reinstalling Windows.

Hey SlickRCBD,Not a stupid question at all! :)It's just fine to hit the X when you have Undo Disks enabled. And corruption or issues with the active VM will be resolved whenever you use the Undo Disk.Cody C Microsoft Answers Support Engineer Visit our Microsoft Answers Feedback Forum and let us know what you think.