I just installed FC6test3 on a laptop that already dual-booted between Linux and WinXP Pro. I chose to overwrite the old Fedora install rather than update. Now I can't boot into WinXP. I see two or three normal lines of grub output and then a jumble of 10 or so high-bit-set characters. The computer beeps and then sits there. I think I've seen this before a long time ago on Fedora, but I don't remember how I fixed it. What exactly got corrupted here?
I tried the Windows XP Recovery Console, and neither "fixboot" nor "fixmbr" was able to fix the problem.
I ended up re-installing XP and then putting FC6 final on the laptop. This time the MBR didn't get messed up, so I'm closing the bug. Thanks.