My hard drive on one of my computers died recently, so I ended up reinstalling several OSes (Ubuntu, WinXP MCE, and Win7). I use grub to dual boot, or in this case, triple boot, and in the past it’s always worked fine. Now suddenly the Windows OSes wouldn’t start, and so I dug around and found out that even though my new drive was on hd2 (as evidenced by the fact I was able to mount my Windows partitions on hdC, and you know how fstab starts with “A” and grub starts with “0″), grub still saw the hd2 as hd0. So, after modifying /boot/grub/menu.lst and changing hd2 to hd0 for the Windows configs, everything was spiffy.