Apple LC 575 manual Using memory efficiently, Using a RAM disk for temporary storage

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Using memory efficiently

If you often see messages that there isn’t enough memory, or if you have problems opening application programs, the tips in this section will help you use your computer’s memory more efficiently.

mIf you’re using a RAM disk, make it smaller or turn it off entirely. (See the instructions in the next section about using a RAM disk for temporary storage.) The RAM disk reduces the amount of memory available to system software and application programs.

mMake the disk cache as small as possible. (See the instructions in your Macintosh User’s Guide.)

mTurn off system extensions you don’t need. For example, you may not need the QuickTime extension if you aren’t using it. If your computer isn’t connected to a network, you may not need the AppleShare extension. You’ll find system extensions in the Extensions folder, which is inside the System Folder. You turn an extension off by dragging its icon out of the System Folder and restarting your computer.

Using a RAM disk for temporary storage

For improved performance, you may want to set aside part of your random-access memory (RAM) to use as a temporary hard disk. Using a RAM disk improves performance because the computer can get data from a RAM disk much faster than from a hard disk or floppy disk.

You use a RAM disk exactly as you would use a hard disk or floppy disk, except that you save your work onto another disk before you shut down the computer.

To set up a RAM disk:

1.Choose Control Panels from the Apple (K) menu.

2.Open the Memory control panel.

3.Click On to turn on the RAM disk.

Remember that the more RAM you allot as a RAM disk, the less you will have available for running application programs.

4.Drag the slider to indicate how much memory you want to use for a RAM disk.

sWarning: If you use a RAM disk, be sure to save your work onto another disk before turning off your computer so that you won’t lose your data. s

30 Special Features

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Contents Getting Started Apple Computer, Inc Contents Installing System Software Iv ContentsCommunications regulation information Move the computer farther away from the television or radioExposure. s Class 1 labelSetting Up Socket end of the power cord Setting UpPlugging in the computer Connecting the mouse and keyboard ADB portComputer. The top of the switch is marked with an Power keyProblems starting up? Safety instructions Health-related information about computer use Musculoskeletal discomfort Eye fatigue Arranging your officeAvoiding fatigue Shoulders relaxed Forearms and hands in a straight lineForearms level or tilted up slightly What’s next? Learning the Basics Use your hand to scoot the mouse along the tableBy the way Macintosh HD stands for Macintosh hard disk Put the tip of the arrow inside this picture Now your screen should look like the following illustration Turning the computer on and off Shutting down the computer with a menu command Press the Power key marked with the P icon on the keyboardTurning on the computer Click Shut DownUse these buttons to Change the volume Computer’s sound On adjusting the keyboard heightGuide for information on OptionalYou can use the screws Your Computer at a GlanceSpecial Features Adjusting the soundUsing the Sound control panel Sound control buttonsAdjusting the screen Using the Screen control panelScreen control buttons Disabling the buttons on the front of your computer Saving energy Using the built-in microphone Installing an expansion cardTo install an expansion card Continues Slide the logic board back Replace the back panel of the computer Using memory efficiently Using a RAM disk for temporary storageConnecting to a network Using a modem Starting up your computer from an external hard diskInstalling System Software Installing System SoftwareUsing the CD as your startup device If you see a blinking question mark on your screenIf you see the Macintosh desktop Reinstalling system software On the desktop, click Install SystemWelcome dialog box that appears, click OK Custom installations Installer dialog box, click InstallOn the desktop, click the Disk Images tab Click a button to select the disk image you want to copyClick Disk Images Dialog box that appears, click Make a Copy Copying the Macintosh Basics tour Open the Applications folderApple Publishing System