The partition for my MacOS X install was smaller than I would have liked, so I tried to change it with an Ubuntu Live CD and parted. Sometimes I just like to change things to see what happens. It caused the system to be unbootable.
Guess I learned, huh? I may reinstall it, I may not. Haven’t decided yet. It was fun while it lasted, though.
UPDATE 11/1: Back up and running, like anyone cares. :oP
UPDATE 11/4: I have given up on MacOSX for now, for multiple reasons. Moving on.