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When Apple released the final system requirements for Mac OS X Leopard, an official cutoff point of 867mhz was introduced leaving several machines, even those just 67mhz below and with dual processors, out in the cold. For these machines Tiger was the only option, until the community was let at it. For those with the time, discs and effort, you could modify the disc. For everyone else, there was Open Firmware, or LeopardAssist.
LeopardAssist originated from LowEndMac in Dylan McDermond's December 6th 2007 post "Faking Out the Leopard Installer with Open Firmware". The simple techniques he used in that article became the basis for the techniques we implemented into LeopardAssist.
The application writes a script into your computers Parameter RAM (PRAM) changing the CPU entry in the device tree to 867mhz. On restart, Open Firmware loads as normal with the 867mhz script in place, 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, the Leopard installer will automatically restore the default boot drive and return your Mac to normal operation.
Quick and Simple Leopard, for your older G4.
New in version 2.3.2:
Version 2.3.2 corrects minor bugs, including where if the user chooses to boot from CD/DVD the system may still be dropped into open firmware. Additionally additional protection has been added if users try to run the application on G3s, G5s and Intels.
- Corrects CD/DVD Boot Option Bug
- Disables NVWrite if G3, G5 or Intel detected
System requirements:
Mac OS X 10.3.9 or later (10.4.11 is recommended, also tested with 10.5.4 for reinstalls).
System Support:
PPC/Intel
Free
For more information, visit:
http://mac.profusehost.net/
Tags: Software Updates ď Software News ď Utilities ď
