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. In the settings where you select a volume, select your current macOS volume (in most cases, it’s the only one available).

In the Recovery app window, select Reinstall for your macOS release, then click Continue. Reinstall your current version of macOS: Command-R. Reinstall your computer’s original version of macOS (including available updates): Option-Shift-Command-R. Install the latest version of macOS compatible with your computer: Option-Command-R. On an Intel-based Mac: Choose Apple menu > Restart, then immediately press and hold one of these key combinations, depending on what you want to do: On a Mac with Apple silicon: Choose Apple menu > Shut Down, press and hold the power button until “Loading startup options” appears, select Options, click Continue, then follow the onscreen instructions. Start up your computer in macOS Recovery:

Get started with accessibility features.

Use Sign in with Apple for apps and websites.

Watch and listen together with SharePlay.

Share and collaborate on files and folders.

Sync music, books, and more between devices.

Make and receive phone calls on your Mac.

Use one keyboard and mouse to control Mac and iPad.

Use Live Text to interact with text in a photo As of macOS 10.12.4, released on Monday, a new keystroke combination at launch will allow Macs to netboot, and download the latest OS compatible with a computer when performing a recovery.

Make text and other items on the screen bigger.

Install and reinstall apps from the App Store.

Instal the new version for apple Flats