Mac|Life: How To Erase a Mac Hard Drive

Is there any way to completely erase the hard drive on the MacBook Pro?

Sometimes you just need to clear the decks and start from scratch. If you’re giving away an old Mac or just want a do-over, fire up Disk Utility. Zapping an entire disk is simple to do. From Applications > Utilities, open the Disk Utility application. Click on a mounted drive in the left-hand column, and select the Erase tab. But be careful when erasing disks. It probably goes without saying, but erasing a disk will remove everything on it. If you want to erase the disk that contains your current operating system, you’ll have to boot from another volume first, like an external drive or the Install Disc that came with your Mac.

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