Change your device alias in Open Firmware

If you happen to have a G4 Cube or another system with a MCE upgraded superdrive, you have the issue of dealing with the Master/Slave mappings. You loose the capability to hold the “C” and boot cdrom. Why? Well Open Firmware detects cd as your hard drive. Here is how you can change that function:

1. Hold Command+Option+O+F
2. devalias
3. See what is listed as hd and cd and write those down
4. devalias cd device-path
5. Replace device-path to what is listed after hd from the devalias command
6. boot cd with a bootable CD to verify

This is great! Look at it go! How do we make it permanent:

1. Hold Command+Option+O+F
2. devalias
3. See what is listed as hd and cd and write those down
4. nvalias cd device-path
5. mac-boot