How to Format a Hard Drive in Mac OS X

If you're looking to upgrade your Mac, or just need to erase a drive, this guide will walk you through the process.

You will need

  • USB flash drive
  • Installer CD
  • Basic computer navigation skills

Step 1 Back up data Back up any data you wish to keep using a USB flash drive or your computer’s recordable disk drive.

Step 2 Insert CD Insert the installer CD and reboot the computer. You may need to enter a username and password upon startup and then select your language.

Step 3 Select Disk Utilities Click on Menu and then Ulilities, and then select Disk Utilities.

Step 4 Choose disk to erase Choose the disk you wish to erase and click on the Erase tab. Select a format from the pop-up menu and then enter a name for the new drive.

Step 5 Finish Format Finish formatting the drive by clicking Okay and then hitting the Erase button. A full format of a primary drive may take several hours to complete.