Live CD failed to run on MacBook, now MacBook won't boot

view full story

http://forums.fedoraforum.org – I burned a Fedora 11 Live CD i686, and tried to boot from it on my MacBook. The first couple of times, it would get to the boot options(?) screen. When I selected "Boot", there was a message saying something like "Not accessible"; basically it would hang. After a couple of failed attempts, I tried to boot back into my MacBook, but now I can't even access that! The apple logo shows, but then a minute or two later, a "no" symbol (circle with slash) shows and doesn't do anything else. Can anyone help me? (HowTos)