![]() If the Security Options button is not available, Disk Utility cannot perform a secure erase on the storage device. ![]() Secure erase options are available only for some types of storage devices. ‘ Select the ‘Erase All Content & Settings’ button. Select System Preferences from the drop-down menu. ![]() (Optional) If available, click Security Options, use the slider to choose how many times to write over the erased data, then click OK. Amazingly, how do I wipe my Mac computer clean and start over Click the Apple icon in the menu bar (top-left corner). 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. Ĭlick the Scheme pop-up menu, then choose GUID Partition Map. Click the Security Options button on the bottom. Make sure you click the drive you want to securely delete: you do not want to erase some other hard drive by mistake When you’re ready, click the Erase button. From the Apple menu in the corner of your screen, choose System Settings. ![]() In the sidebar, select the storage device you want to erase, then click the Erase button. Connect the drive you want to securely delete, then click it in the sidebar. The computer will begin to boot into the MacOS Recovery mode.Restart your Mac and hold down the following button combination.We are assuming you already copied all your data to an external backup, or to your new Mac, because the following steps will really erase your disk. If you want to erase any other type of storage device: Double-click Disk Utility in the /Applications/Utilities folder. The macOS Utilities menu will appear after a few minutes. ![]() 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. ![]()
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