Apple Mac OS 9 - Manual (Page 11)

11
After Installation
You can’t start up or restart the computer, or when you do you see a bomb
message.
You probably have an incompatible item in the System Folder. Follow the instructions in
“Resolving Software Conflicts,” next. If you still can’t resolve the problem, you may need to
reinstall the system software by following the instructions in “Performing a Clean Installation”
on page 12.
Application programs freeze, or require you to restart the computer.
You may have an incompatible item in the System Folder. Follow the instructions in “Resolving
Software Conflicts,” next. You may also need to contact the program’s manufacturer to
determine if it is compatible with this version of the Mac OS.
Resolving Software Conflicts
If your computer does not start up properly or behaves erratically, you probably have an
incompatible extension, control panel, or application.
Step 1: Verify the Problem
To verify that you have a compatibility problem, follow these steps:
1 Start up your computer while holding down the Space bar.
When the Extensions Manager control panel appears, release the Space bar.
2 Open the Selected Set menu and choose the item with the words “Mac OS Base.”
This turns off all extensions and control panels except those installed with the Mac OS.
3 Close the Extensions Manager to continue startup.
4 When the computer is finished starting up, try the same actions that caused the problem.
If the problem no longer occurs, you probably have an extension or control panel that doesn’t
work with this version of the Mac OS. Continue with the steps in “Test Individual Extensions
and Control Panels,” next, to identify the item that is causing the problem.
If the problem still occurs, try checking your hard disk for problems using the Disk First Aid
utility, provided on the Mac OS CD. If the problem occurs only when using a certain program,
that program is probably not compatible or may need to be reinstalled. Check with the
program’s manufacturer for information.
Step 2: Test Individual Extensions and Control Panels
To test an individual extension or control panel for compatibility, follow these steps:
1 Restart your computer while holding down the Space bar.
The Extensions Manager appears again.