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To do a clean installation, follow these steps:
1Start up your computer from the Disk Tools disk or the
See “Starting Up From a
2Find and open the Disk First Aid icon.
You may need to look in a folder called Utilities to find Disk First Aid.
After Disk First Aid starts, follow the instructions on the screen. Disk First Aid checks your hard disk for any problems.
3When Disk First Aid has finished checking your hard disk, choose Quit from the File menu.
4Find and open the Apple HD SC Setup icon.
You may need to look in a folder called Utilities to find Apple HD SC Setup.
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Click Drive until the disk on which you want to reinstall system software appears. Click Update and follow the instructions on the screen.
When you see a message that the update was successful, click Quit.