📄️ Format a storage device
Erase and reformat a storage device in Disk Utility on Mac
📄️ Backup a MacOS
Back up your Mac with Time Machine
📄️ Set encryption options on Mac
Choose a backup disk and set encryption options on Mac
📄️ Restore a MacOS
Restore your Mac from a backup
📄️ Erase a Mac
On a Mac with Apple silicon or an Intel-based Mac with the Apple T2 Security Chip, use Erase Assistant to reset your Mac to factory settings before you trade it in or sell it. You can also use Erase Assistant to erase your Mac before reinstalling macOS. Erase Assistant removes your content and settings, and any apps that you installed. To open Erase Assistant, click the Erase All Contents and Settings button in Transfer or Reset settings.