Hi, I'm new to Macs, but I'm usually pretty good with computers in general. I was recently given an Imac and needless to say, I was a bit lost at first but i caught on pretty quick. I recently have been been trying to fix a few things with my Imac. My Pioneer dvr-106d had been giving me problems reading and successfully burning discs. I tried flashing my drive and changing it from firmware revision a612 to firmware revision 1.08 and no such luck. I solved that problem by simply cleaning the drive's laser. After several wasted blank discs and about a week of lack of sleep, I managed to burn a mountable copy of leopard 10.5.6 to a single layer disc as seen in several techniques online. The installer loads and even gets as far as checking the disc for consistency, but once the installation actually begins it fails and i have no clue as to why. I tried using DVRFlashX to flash my drive back to the A612 firmware revision to see if that made a difference but i got nothing. I've seend plenty of posts where people with the same exact iMac and specs have installed successfully. Could anyone tell me exactly what all the system requirements are for installing it successfully and what could be lacking from my attempts? Here are the specs on my Mac and my drive as of right now: Machine Name: iMac Machine Model: PowerMac6,3 CPU Type: PowerPC G4 (3.3) Number Of CPUs: 1 CPU Speed: 1.25 GHz L2 Cache (per CPU): 256 KB Memory: 768 MB Bus Speed: 167 MHz Boot ROM Version: 4.7.8f1 and: Firmware Revision: A612 Interconnect: ATAPI Burn Support: Yes (Vendor Supported) Profile Path: /Library/DiscRecording/DeviceProfiles/PatchBurn-pioneerdvdrwdvr106d.drprofile Cache: 2000 KB Reads DVD: Yes CD-Write: -R, -RW DVD-Write: -R, -RW, +R, +RW Burn Underrun Protection CD: Yes Burn Underrun Protection DVD: Yes Write Strategies: CD-TAO, CD-SAO, CD-Raw, DVD-DAO Media: No Here are my graphics specs also in case that matters: Chipset Model: GeForce FX 5200 Type: Display Bus: AGP VRAM (Total): 64 MB Vendor: nVIDIA (0x10de) Device ID: 0x0329 Revision ID: 0x00a2 ROM Revision: 2079 by the way I am currently running Tiger 10.4.1 trying to go to Leopard 10.5.6. I was gunna try a clean install but whats the point if the installer is failing now. I don't wanna be left without an installed operating system. P.S. when the installer ails it says the installer wasn't able to find what it needed to install. Check internet connection or contact the support from Apple basically. Any help would be great thx guys.