What ROM do you have in your A3000 now? If you have Kickstart 1.4, you surely CAN boot 3.1 Kickstart off your HD. Of course, you'd need that Kickstart file first and that's tricky enough securing if you don't have the ROM (you need an A3000 specific Kickstart ROM image). Screw Google. Do a search here for this info, what to rename the HD and all that good stuff.