I initially installed Windows 8 (then upgraded to Win 8.1) under Parallels on my iMac. I also decided I wanted to try a boot camp install so I went through the steps and used another serial number I had. Can I combine the two serial numbers somehow so I have one available for another machine? I was thinking of blowing away the parallels install and then reinstalling from boot camp. Suggestions? Can I just alter the serial number to match instead of uninstalling and reinstalling?