If your computer’s performance decreases

If you notice a decrease in your computer’s speed and general performance after you install special software (a control panel, system extension, or custom utility), it may be because the software is not compatible with Macintosh computers built with the PowerPC microprocessor.

mTo find out if a system extension or control panel is the problem, hold down the Shift key while you restart the computer. This temporarily turns off control panels and extensions. If the computer performs better without these software items, one of them is likely to be the problem. (If you just added new software, its system extension, control panel, or custom utility is the most probable cause of the problem.)

To find out which software is the problem, use the Extensions Manager control panel (in the Control Panels folder in the Apple [K] menu) to turn off a system extension or set of extensions and then restart your computer. (If you just added new software to your computer, its system extension is the most probable cause of the problem.) For detailed instructions, see the

information about managing system extensions in the “Customizing Your Computer” topic of Macintosh Guide, available in the Guide (h) menu. If the computer performs better when an extension is turned off, contact the extension’s manufacturer for information or an upgrade.

mUse the Memory control panel to turn off virtual memory. For more

information on virtual memory, see the “Memory” topic of Macintosh Guide, available in the Guide (h) menu.

Note: If you turn on both virtual memory and RAM disk in the Memory control panel, don’t set both of them at or near their maximum values. Doing so can result in unpredictable or reduced performance by your computer. (RAM disk uses random-access memory, or RAM, as if it were a hard disk.)

If you still do not notice an improvement, you may want to reinstall system software on your startup hard disk. See Chapter 7, “Reinstalling Your Computer’s Software,” for instructions.

If you typically use several application programs at the same time, your computer’s performance will increase if you install more random-access memory (RAM). See Chapter 8, “Installing Expansion Cards or Additional Memory.”

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Apple 6360 manual If your computer’s performance decreases