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. 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. Click the Scheme pop-up menu, then choose GUID Partition Map. You can give the partition/drive a label, select its partition scheme, and specify its file format as well. This will display the following pop-up on the screen.

Go to its toolbar and click on the 'Erase' option. On the right, you can view details about the selected 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. In the sidebar, select the storage device you want to erase, then click the Erase button. Simply go to the left panel and select the disk you wish to format.

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