LeopardAssist For Mac

Install Mac OS X Leopard on any system that doesn't quite match up with the 867mhz CPU requirements without hassle. No CPU upgrades, no DVD hacking, just a simple one-time-use tool.

LeopardAssist works by using a temporary Open Firmware "trick", changing the reported CPU speed to 867mhz and starts the installer from CD.

In technical terms, the application writes a file, "boot.txt" to the root directory of the hard disk, and configures the NVRAM (PRAM) to boot from it. On restart, Open Firmware reads the file which contains instructions to change the reported CPU speed, switches to CD or DVD and boots from it, where the Leopard installer takes over.

This simple trick means you don't have to modify your DVD to install Leopard. Finally, when installation is done or when installation is ready to reboot, you simply flash the PRAM back to restore the original CPU speed and restore booting from the hard disk.

· All effects of LeopardAssist are 100% reversible by simply, as always, flashing the PRAM to return to a previous state by holding down Command (Apple) + Option + P + R and restarting the machine until you hear the second chime. · The users are strongly encouraged to exercise caution in using this and it is at your own risk.