Apple iMac G3 (Original) User Manual download pdf (Page 24)

24 Chapter 2

3 If the number in the Minimum Size box is larger than the largest unused block, not

enough memory is available to use this program. To free memory, quit open programs

or restart the computer. You can also type a smaller number in the Minimum Size box

if you want to open the program using less memory. But some programs don’t work

well if you assign them less memory.

4 If the number in the Preferred Size box is smaller than the largest unused block, you

may need to assign more memory to the program. (A program may need more

memory if you are working with complex documents.) Type a larger number in the

Preferred Size box. (Try increasing the number in increments of 200.)

m Use the Memory control panel to reduce the size of the disk cache, remove or reduce the

size of your RAM disk, or turn on virtual memory. For more information, use Mac OS Help

(choose Help from the Finder’s Help menu).

Note: If you have both virtual memory and a RAM disk turned on 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. (A RAM disk uses random-

access memory, or RAM, as if it were a hard disk.)

m Tu rn off system extensions that you don’t need using the Extensions Manager control

panel. See the information about the Extensions Manager control panel in Mac OS Help

(choose Help from the Finder’s Help menu).

m If you have installed system software additions from the Apple Extras folder, you may want

to remove them if you are not using them. (This software can decrease the amount of

memory available for use by application programs.) To remove a system software

addition, run the system software Installer. Follow the steps for a custom installation (one

of the choices is to Add/Remove software). For more information, see Chapter 5,

“Reinstalling Your Computer’s Software,” on page 53.

m If you frequently want to open more programs than memory allows, you may want to

install more random-access memory (RAM). See the online documentation that came

with your computer.

Computer freezes.

m Your computer may be trying to complete a task, but it’s taking so long that it seems that

the screen has frozen. If you need to do something else instead, try simultaneously

pressing the Command (x) key and the period key (.) to cancel the task the computer is

working on.

m There may be a temporary software problem that can be ﬁxed by restarting your

computer. See “Restart the computer.” on page 12.

If the problem recurs, it may involve one or more of your application programs. See the next

entry for additional suggestions.

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Apple iMac G3 (Original) User Manual Page 24