Apple MacBook (13-inch, Early 2009) - Manual (Page 51)

Chapter 4 Problem, Meet Solution 51
To check for updated software:
1 Open System Preferences.
2 Click the Software Update icon and follow the onscreen instructions.
 For more information, search for “Software Update” in Mac Help.
 For the latest information about Mac OS X, go to www.apple.com/macosx.
Reinstalling the Software That Came with Your MacBook
Use the software installation discs that came with your computer to reinstall Mac OS X
and any applications that came with your computer. You can choose “Archive and
Install,” which saves your existing files and settings, or “Erase and Install,” which erases
all your data.
Important: Apple recommends that you back up the data on your hard disk before
restoring software. Because the “Erase and Install” option erases your hard disk, you
should back up your essential files before installing Mac OS X and other applications.
Apple is not responsible for any lost data.
Installing Mac OS X
To install Mac OS X:
1 Back up your essential files.
2 Make sure your power adapter is connected and plugged in.
3 Insert the Mac OS X Install DVD that came with your computer.
4 Double-click Install Mac OS X.
5 Follow the onscreen instructions.