I tried to boot using SnowOSX, and no luck, it either instantly reboots or stalls with a green stripe on my screen, no KP either, just boom and pow.

I tried with the following switches: cpus=1 platform=ACPI platform=X86PC -x86 -x -v -s -f

No luck.

Regular Leopard discs hang later on while booting =(

---

Lenovo D20 8 Core Thinkstation:
[Intel 5520 Motherboard | Two Intel Xeon E5504 @ 2GHz | 4GB DDR3 RAM | Mac OS X Snow Leopard 10.6.3 (running in full LP64!) | nVidia Quadro FX 580 Dual HDMI + DVI 512 MB| DVD +RW DL]

iBook G4:
[14" Mid 2005 | 1 GB RAM | 80 GB HDD | SuperDrive | Mac OS X Leopard 10.5.5]

∞