Got myself a Power Mac G5?

[Forcie]

Note that you need
- A supported G5 model (PowerMac7,2 or 7,3)
- A supported graphics card in the G5 (ATI card)
You can read more about it here: http://morphos-team.net/hardware

If you have that installing MorphOS is very easy.
1. Burn iso from http://morphos-team.net/downloads
2. Boot the G5 with CD in the drive while holding down the C key on the keyboard until you see the MorphOS boot screen
3. Wait for boot to complete and follow the instructions in IWizard which starts immediately.

[Forcie]

Also, note that the ATI card in question has to have Mac firmware onboard, the equivalent PC model will not work. In theory one could reflash the firmware on a PC ATI card, but the Mac firmware often takes up more room. Sometimes it is too large to fit in the flash memory chip that comes with the PC cards when the manufacturer picked a memory size that was "just large enough" to save money.