![]() ![]() If the Security Options button is not available, Disk Utility cannot perform a secure erase on the storage device. But, depending on the version of macOS that the Mac is running, there are a few additional steps you may want to take. Here’s how: Open Disk Utility via your Applications > Utilities folder. Secure erase options are available only for some types of storage devices. Erasing your Mac will typically ensure that your data stays in your own hands. Whether it’s a hard drive in an older Mac or an external hard drive, if it is accessible, you can use Disk Utility to securely erase it. (Optional) If available, click Security Options, use the slider to choose how many times to write over the erased data, then click OK. 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. Securely erase specific files with Eraser. 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. ![]() 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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