Install or Reinstall Lion from Scratch
1. Backup your existing data.
2. Restart and Hold down Command + R key until menu appears.
3. Select Disk Utility from Menu and Continue.
4. Once DU is loaded select your drive.
5. Check the status of your drive. If it does not say "Verified" that means your hard drive has already failed or it is about to fail. This is a permanent hardware failure and drive should be replaced at this time.
6. If you Drive was Verified, then click Erase from Menu.
7. Select Format Type to MAC OS Extended and Erase. Wait until the process is completed.
8. Quit DU and come back to main menu.
9. Select "Reinstall Lion" and click Install. This should start the Lion installation. Follow online instructions to complete the process.
1. Backup your existing data.
2. Restart and Hold down Command + R key until menu appears.
3. Select Disk Utility from Menu and Continue.
4. Once DU is loaded select your drive.
5. Check the status of your drive. If it does not say "Verified" that means your hard drive has already failed or it is about to fail. This is a permanent hardware failure and drive should be replaced at this time.
6. If you Drive was Verified, then click Erase from Menu.
7. Select Format Type to MAC OS Extended and Erase. Wait until the process is completed.
8. Quit DU and come back to main menu.
9. Select "Reinstall Lion" and click Install. This should start the Lion installation. Follow online instructions to complete the process.
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