Solving Problems 21
4 Make a note of the name of the currently selected set of extensions in the Selected Set pop-
up menu so that you can return to it later if you want.
5 Open the Selected Set pop-up menu and choose Mac OS 8.5 Base.
6 Click the Continue button to continue startup.
7 When the computer is ready, try the same actions that caused the problem.
If the problem no longer occurs, you probably have one or more extensions or control
panels that has corrupted preferences, is corrupted itself, or doesn’t work with Mac OS 8.5.
Continue with the steps in the next section.
Test Individual Extensions and Control Panels
A recently installed extension or control panel might be the problem. If you have a lot of
extensions and control panels, you may want to “work by halves.” Turn on half the extensions
and control panels and test for the problem. If the problem disappears, repeat the process
turning on half of the remaining items. If the problem persists, repeat the process turning off
half of the items that are turned on. Continue to work by halves like this until you locate the
conflicting extensions or control panels.
1 Make sure the Caps Lock key is not engaged.
2 Restart your computer while holding down the Space bar.
3 Release the Space bar when the Extensions Manager control panel opens.
Note: If the Extensions Manager control panel doesn’t open after a few minutes, restart the
computer holding the Shift key down, so all extensions are turned off. Then open the
Extensions Manager control panel and continue with the steps below.
4 Open the Selected Set pop-up menu and choose the desired set of extensions you want to
test.
5 Click the Duplicate Set button to create a new set of extensions. In the dialog box that
appears, type a name for the set (for example, “Test Set”) and click OK.
6 Tu rn off all the extensions in the new set by opening the Select Set menu and choosing All
Off.
7 Tu rn on the item you want to test by clicking its checkbox.
8 Click the Continue button to continue startup.
9 Tr y the same actions that caused the problem.
If the problem occurs again, the item is probably incompatible. Remove the item from the
Extensions or Control Panels folder or turn the item off using the Extensions Manager.
10 Restart your computer while holding down the Space bar to open the Extensions Manager.
Tu rn on the next item you want to test. Repeat this step until you’ve located the extension
that is causing the problem.
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