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5. Select a language, then press the right arrow key. 6. Click the Utilities menu, the choose Disk Utility. 7. Select a volume to erase (usually called Macintosh HD). 8. Click the Erase tab. 9. Click Erase... Important: This step will completely erase your hard drive. If you have installed Microsoft Windows using Boot Camp, or have multiple partitions, this procedure will erase the partition you select. 10. A dialog box appears asking if you want to erase the partition: click Erase. 11. After th