- How to reinstall macOS from macOS Recovery
- Method 1. Format FAT32 on Mac [Disk Utility]
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- How to wipe your Mac and reset it to factory settings
If you're handing down your old Mac to your kid or someone else in your house, then it's a good idea to unpair any Bluetooth devices from it so your mouse or keyboard controls your new Mac and doesn't interfere with your old one.
To enter recovery mode, restart your Mac and immediately press and hold Command-R. You can release the keys when you see the Apple logo. Next, you'll see the MacOS Utilities window. Choose Disk Utility , click Continue and select your startup disk -- unless you renamed it, odds are it's labeled Macintosh HD or something similar.
How to reinstall macOS from macOS Recovery
Next, click the Erase button at the top of the Disk Utility window and fill out these three fields:. You should return to the MacOS Utilities window. If not, restart your Mac again, holding down Command-R while it reboots. After MacOS has been reinstalled, you'll be greeted by the Setup Assistant, which you can quit out of and shut down your Mac.
It's now ready for a fresh start with its next owner. Apple's latest MacBook Air : Full details on the slender new laptop.
Method 1. Format FAT32 on Mac [Disk Utility]
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Alternatively, you might be planning on selling your Mac, or passing it on to a member of the family, and be aware that you need to wipe it first and return it to factory settings. It is even possible to reinstall the version of the macOS that your Mac shipped with this way - which might enable you to revert to an older version of the operating system if the latest version is upsetting you.
Whatever your reason to reinstall MacOS, we will show you one of the simplest ways to do so below. Our method involves using the Recovery partition via which you can reinstall the latest version of the MacOS you installed on your Mac.
How to wipe your Mac and reset it to factory settings
Because MacOS is normally installed via the Mac App Store there are no physical installation disks, therefore Apple has made it possible to install the operating system over the internet using the Recovery HD. An alternative option would be to create a bootable macOS install on an external drive.
If your Mac won't boot in Recovery mode, read this: Mac can't access Recovery mode. A back up: If you are planning to wipe your Mac as part of this process - either because you think that a clean slate might fix issues you are having, or because you are selling the Mac - you will want to back up your important documents first. How you do this will depend on whether you want to recover your Mac into the same version of the Mac operating system, or if you were hoping to do a clean install. Read about backing up a Mac here.