I'm building a new computer and trying to get OS X installed using the iBoot 2.0 ATI CD and a 10.6.3 Retail DVD. Gigabyte GA-P55A-UD7 Intel Core i7 875k Asus Radeon EAH4870 1GB Apple 160GB SATA HD (circa 2004) in the first Intel SATA port Western Digital Caviar Black 1TB SATA HD in the second Intel SATA port Lite-On DVD-RW (IDE) I followed the iBoot 2.0 guide on the blog (AHCI, HPET 64-bit, etc.) I've disable most of the integrated peripherals (USB 3.0, SATA 6Gbps, Audio codec, Firewire, both LAN ports, half the IDE controllers) which has gotten me down to my currently unresolvable kernel panic. Seemingly involving USB drivers: Code (Text): Refusing new kext com.apple.iokit.IOUSBFamily v.3.9.6 a loaded copy with a different executable UUID is already present Is the part we seem to be tripping over. Does anyone have any idea what the solution is? Or perhaps troubleshooting steps I should take to get it working? I've seen other users reporting success with this motherboard, so I assume there must be a way to get it working.