My intel core2duo mac mini will not boot up from a disc whilst holding down the "c" key. I ran Disc Repair which said "First aid failed" and "vol. header needs minor repair. The volume MacintoshHD needs to be repaired."
Usually I fix these things by booting up from DiscWarrior, but now I can't boot up from any disc using the "C" key or the "option" key. My computer seems to try it and then loads the desktop.
Also tried booting up in target mode and nothing happened. I'm using an Ativa PC non mac keyboard but have been told that it shouldn't make a difference.