10.5: Install 10.5 on an unsupported PowerPC iMac |
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There are two parts to this solution; the first part covers installing Leopard on an unsupported 700mhz G4 iMac, and the second part fixes the sleep issues with the graphics drivers.Part One: Installation using the DVD installation disk. The instructions below pretend that the iMac is an 867Mhz model. The change is temporary; after reboot the settings are lost.Insert installation DVDRebootHold down Command-Option-O-F to boot into open firmwareAt the prompt (>), type the following (note that the 0 below is a zero)dev /cpus/PowerPC,G4@0 d# 867000000 encode-int " clock-frequency" property boot cd:,:tbxi After the install disk has booted, you must load Terminal from the menu and enter the following:pmset -a displaysleep 0 halfdim 0 sleep 0 disksleep 0 forceTo verify your c...
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