- Put the OS X install CD in your drive
- Reboot holding the 'C' key.
- At the first screen, 'select a language' go to the installer menu and choose Disk Utility.
- Click on the Erase Tab
- Select your hard drive from the menu on the left
- Click on the Security Options button (at the bottom of the window)
- Select 'zero all data'
- Click OK
- Click Erase.
- Wait a long time (takes at least 30 minutes), and all data is gone and zeroed.
- Quit the Disk Utility, and choose to continue the installer.
- When that is complete, shut down instead of setting up the system (press CMD-Q, and select the option to exit the setup and shutdown).
- When the computer is booted next, it will return to that setup screen for the new user.
© Fred Händl - 2010
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