Just shut down your Mac and plug in the drive. Using the drive to reinstall macOS is simple. Release the keys when the Apple logo appears on the screen.Ĩ. To do that, shut down your Mac and then restart it while holding the CMD+R keys. The first step is to start your Mac in Recovery Mode. With that warning out of the way, let’s get started:ġ. And you won’t be able to recover the deleted data. That also means that you should create a backup of your data before proceeding with this tutorial as you will lose all your data. This is also handy when you are selling your Mac to someone as it ensures that no personal data is left on the device. If your Mac is showing its age or having problems, and you have tried all the troubleshooting methods, the final step is to reset it to its original state. My experience on going through the process.Do a fresh install of macOS operating system using bootable drive.You can click on the links below to move to the section you are most interested in. In the second section, I will show how you can install the macOS operating system using a bootable device. In the first section, I will share the steps of resetting a Mac.

Mac sierra change password for computer