Oh, Microsoft, you really have put me in my place. I thought I was doing the smart thing, installing the Win 8 preview on a partition, so I could get right back into Win 7 when I needed to. But no, you had to prove me a dumbass by changing up the bootloader. Four hours all told to find a solution. Thank you for bringing me down a notch just when I thought had something figured out. Only you, Microsoft. Only you…