Select your hard disk, then click erase (under Erase pane). You can do this by selecting Disk Utility then click Continue.

The first thing we will do is to erase everything.

After a few minutes, macOS Utilities window will appear.

Then you need to wait until you see the Utilities window.

Then you will be asked to connect to a Wi-Fi network.

You screen will indicate that Internet Recovery is starting.

Release the keys when you see the Apple logo.

Start your Mac, immediately after starting (after you hear the startup sound), press and hold Option-Command (⌘)-R.

Turn off your Mac (you may choose Apple menu > Shut Down).

First you need to start your computer from macOS Internet Recovery.

You can use Time Machine (Apple menu > System Preferences > Time Machine). This process also installs the macOS version that originally came with your Mac when it was new.ĭo you want to back up your stuff? Before you restore your system to its original settings, you will want to back up your computer. This process will remove everything (your photos, settings etc) and reinstall macOS. Here is how: How you can factory reset your Mac completely You can also reinstall macOS without erasing anything. For instance, if you are giving away or selling your Mac, you should return your computer to its factory settings, so that your personal information does not remain on the hard drive. You may want to do this for various reasons.

More specifically this factory reset wipes your Mac completely clean (all your settings and data will be gone). This entails erasing (reformatting) your hard drive and reinstalling OS X.

Format factory macbook pro