If you have installed Microsoft Windows using Boot Camp, or have multiple partitions, this procedure will erase the partition you select. Important: This step will completely erase your hard drive. Shortcut keys listed at the bottom of the screen let you make changes to the wipe process. When ready tap F10 to commence the wipe process. Tap Space to flag the drive with the wipe flag. Select System Preferences from the drop-down menu. Click the Apple icon in the menu bar (top-left corner) 2. If the Security Options button is not available, Disk Utility cannot perform a secure erase on the storage device. Select a volume to erase (usually called Macintosh HD). Use the arrow keys to select the device you wish to wipe. To wipe your Mac computer clean and start over, you will need to follow thse steps: 1. Secure erase options are available only for some types of storage devices. (Optional) If available, click Security Options, use the slider to choose how many times to write over the erased data, then click OK. Select Disk Utility from the Utilities window in macOS Recovery. Step 2 Select the Hard Drive You want to Wipe Step 3 Select the Wiping Algorithm. Step 2: Use Disk Utility to Erase Your Mac Hard Drive 1. If the Scheme pop-up menu isn’t available, make sure you selected the storage device you want to erase-it’s at the top of the hierarchy.Ĭlick the Format pop-up menu, then choose a file system format. Step 1 Install the Application and Connect Your External Hard Drive to Mac. Ĭlick the Scheme pop-up menu, then choose GUID Partition Map. In the sidebar, select the storage device you want to erase, then click the Erase button. If you want to erase any other type of storage device: Double-click Disk Utility in the /Applications/Utilities folder. You can choose one to erase hard drive according to your macOS. The method of restoring factory settings is distinguishing in different Mac OS. If you want to wipe an internal hard disk with macOS installed, you can use the built-in factory reset to erase the disk. Note: If you want to get your Mac ready to trade in, sell, or give away, and your computer is a Mac with Apple silicon or an Intel-based Mac with an Apple T2 Security Chip, use Erase Assistant. Solution 2: Wipe a Mac startup disk with factory reset.
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