I was in Boot Camp and decided to switch to Mac OS X. I have separate HDDs for Windows and Mac, by the way. I thought that I shut Windows down, but I accidentally set the computer to sleep. I then pulled the HDD, slotted my OS X drive in, and booted. The first thing I saw was the Windows login screen, then a BSoD. I force-shut down the computer, and rebooted. Now OS X is stuck at the boot screen with the spinning gear. What should I do? The disk (in terms of free space) looks about right, but repair disk doesn't seem to do anything. I only have a Leopard disk, but my computer is running Snow Leopard.