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Installing Leopard on Machines under 867MHz
Without using LeopardAssist

Have you ever tried using LeopardAssist but for whatever reason it won't work? Or you don't have an OS on your computer?
Today, I'll show you how to install Leopard 10.5 on a machine under 867MHz using Open Firmware.
What you will need:
Leopard Installation Media
A G4+ machine with a supported graphics card and 512MB+ RAM
Note: Before attempting to install Leopard, make sure your firmware is up-to-date. On most PowerPC machines,
firmware updates must be native in Mac OS 9. Check here to see if one is available.
Also, if you are using an external Hard Drive or thumb drive, make sure to select that as your boot drive before starting Open Firmware.
Remember, playing around with Open Firmware is not recommended.
Leopard


Todays Test Machine:

Titanium PowerBook G4
Late 2001
550MHz PowerPC G4
768MB of RAM
60GB Hard Drive
ATi Radeon Mobility 16MB

Leopard Assist

For those with 667Mhz PowerBooks (Or possibly other Macs that don't work with LeopardAssist): 1.) Place the 10.5 Install disk in your drive. 2.) Restart your Mac (don't use on the installer on the disk) 3.) After the chime, hold down COMMAND+OPTION+O+F until you see a light gray screen with black text. Have you ever tried using LeopardAssist but for whatever reason it won't work? Or you don't have an OS on your computer? Today, I'll show you how to install Leopard 10.5 on a machine under 867MHz using Open Firmware. What you will need: Leopard Installation Media A G4+ machine with a supported graphics card and 512MB+ RAM. As much as Apple tries to convince you otherwise, your Mac isn't too old to run Mac OS X Leopard. Now, with LeopardAssist, you can install the latest operating system from Apple on computers that don't meet the minimum requirements.

Leopardassist

  1. Insert or Plug in your installation media and power up the computer holding down Command-Option-O-F
  2. Release the keys when prompted to.
  3. Type in dev /cpus/PowerPC,[email protected] and press return
  4. Type in d# 867000000 encode-int ' clock-frequency' property and press return (for dual processor machines, repeat steps 3 and 4 replacing the @0 in step 3 with @1
  5. If booting from a CD, type boot cd:,:tbxi. If you selected your boot media from the Startup Disk menu, simply type mac-boot to go to the installer.