I just upgraded to Parallels 12 and opened my Boot Camp VM and it starts Windows then shows a screen "Upgrading My Boot Camp". After several minutes, it stops and shows a boot screen in the VM that says "No boot device is available". There is nothing wrong with the Boot Camp partition because I can boot into it with no problems. It's only this upgrade that's failing. I've even deleted my pvm file and tried recreating and I get the same thing. Any ideas?