Step 3 Choose Select Backup Disk option and then pick the disk to create the backup. Step 2 Find and open the Time Machine app. Step 1 Click on Apple icon on the menu bar and choose System Preferences from the drop-down list. First of all, you should back up all important data on Mac. ![]() Surely, there are some parts you should pay attention to. The process of wiping a Mac or MacBook to factory settings will delete all data stored on the computer. What You Should Do before Wiping MacBook Pro
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