Sapporobaby, is your Mac one of the more recent Intel machines ?

If so, I would guess using a run-of-the-mill Linux Live CDs (such as Knoppix) should be possible, and certainly doable in a 30-to-60 minutes time frame, even the first time. Could save you tons of time in the future, too.

If your Mac is Intel-based I can elaborate on those simple steps (although I believe I already did some months ago).