I am new to the Mac scene, I am a long time repair technician of PCs. I can repair anything thrown at me, but a Mac, I will admit now I haven't touched until recently. I was given an iMac G5 and recently aquired a PowerBook G4 1GHz. The iMac G5 had a bad hard drive, the PowerBook G4's HDD was ok and needed the OS reinstalled. My predicament: I have the original CDs for the iMac G5 (so far only CD 1, I'm working on getting the rest of the discs for the iMac G5) but I do not have any discs for the PowerBook G4. How do I install an OS on this without them? I've managed to download OS 9.2.2, OS X 10.5\10.5.6 Leopard, and OS X 10.6\10.6.3 Snow Leopard. I've done A LOT of research on this matter and have come across a possible result that I cannot install a fresh install from a burned disc due to a BIOS "feature" that disables the ability to install from a burned disc. Is this true? I've also read places that you can modify the installer and it might work? I haven't really identified what that is accomplishing and if it'll work for my situation. I've read and tried another option that I can try to start the installed from "Open Firmware"...? Needless to say that didn't work either. Finally, I'd like to say that if this isn't allowed on this forum I apologize (possibly asking to reverse engineer etc.). I'm able to boot up to a burned copy of the GeekSquad Mac MRI\TechTools Pro 4 diagnostic tools and runs fine (on both machines) but not an OS disc. I can also boot to disc 1 of the iMac G5 disc and run all the hardware tests, I can't go further in the install as there isn't a functional HDD in the unit. Thanks in advance!