Well I disconnected the disk drive and the keyboard. Plugged it back in and - BAM it booted up!!

Now it just says "Check Disk Drive" for the internal drive. Then I plugged in a IIGS external drive I had. It doesn't seem to read the disk either, although the light blinks.

However after reading this article: http://support.apple.com/kb/TA27890 It may not support a Unidisk drive. The external drive I'm using is an "Apple 5.25 Drive" Model A9M0107 - do I need a ROM upgrade? Blah... I just wanted to try Ms. Pac-Man that my IIgs was able to play.

Any thoughts?