Dual Monitor G4 OS 9.2 won't revert to 1 Monitor

HELP: I can't revert back to one monitor without getting a black screen. The monitor application is very confusing. Do I keep Monitor 1 plugged in ? all the toolbar menus appear on Monitor 2. UUUggghhhh!

Hi, Geoff -
The only OS 9 Install CDs that a G4 (AGP) model can use are -
• An original Software Install CD that came with the machine; this may be for OS 8.6 (on the first (AGP) models) or for OS 9.0.4 (on later AGP models)
• A retail OS 9.0.4 Install CD
• A retail OS 9.1 Install CD
• A retail OS 9.2.1 Install CD
Now i can't even install os 9.2 at all. Starting up from the OS disc freezes up the computer every time. I tried several different OS9 Cds and they are all the same.
Several folk with similar machines which have had processor upgrades have discovered that the machine will not boot to an OS 9 Install CD with the processor upgrade installed. The solution appears to be to put the old processor back in, install OS 9, then re-install the processor upgrade.
The machine boots up fine with OSX, but freezes up in 9.2 when the extensions icons start to appear.
Have you tried booting with Extensions Off? To do that, hold down the Shift key from the beginning of booting (from when the startup chimes sound), keep it held down until the desktop has loaded.
If this works, it would indicate that you have an extensions conflict of some kind.

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Go to Solution.

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Dual Monitor G4 OS 9.2 won't revert to 1 Monitor

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