![]() ![]() 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. (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. In the sidebar, select a volume, then click the First Aid button. Ĭlick the Scheme pop-up menu, then choose GUID Partition Map. In the Disk Utility app on your Mac, choose View > Show All Devices. Open Disk Utility, select the USB drive, and click the. 1.To start the process of backing up your Mac to your external drive, take your cursor to the top-left side of your desktop. ![]() In the sidebar, select the storage device you want to erase, then click the Erase button. To create the bootable installer, plug the USB drive into your current Mac. 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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