View source for Installing Mac OS X 10.5 Leopard on slow computers

Mac OS X 10.5 Leopard requires a PowerPC G4 running at 867 MHz or faster. The G4 is required, but the speed really isn't.

Boot to Open Firmware using Command-Option-O-F. Then, assuming you are going to run the installer from the optical drive, do this:

 dev /cpus/PowerPC,G4@0
 d# 867000000 encode-int " clock-frequency" property
 setenv boot-device cd:,\\:tbxi
 mac-boot

This will fake the CPU frequency as seen by the installer until the next boot. This was tested on an 800 MHz eMac.

[[Category:Guides]]
[[Category:Open Firmware]]
[[Category:PowerPC Macs]]
[[Category:Mac OS X]]