Looking for a windows regitry key that will tell if the OS is a guest to VM.
Key should be available in XP/2003/Vista/Win7/2008.
I thought about looking for "c:\boot.ini" to check. but thats not fullproof.
Other ideas on how to tell if its a GUEST OS are welcome.. BUT:
I already know in vmware there are ways, so..
Your ideas must work on VMWare,VirtualIron,VirtualBox,HyperV!