Factory resetting your Mac computer will erase all your data from the hard drive, as well as your preferences and customized settings. You can fix several technical issues by restoring a Mac to its factory settings, and it’s also something you should do before selling your Mac or giving it to someone you’ll protect your data and allow the new owner to personalize the device.
If you’re giving your computer away, also make sure that you’ve signed out of iTunes, iCloud, and iMessage — there’s a chance your Apple ID data will remain on the drive after you reset it, and you don’t want anyone gaining access to your account.
Our simple step-by-step guide will help you to erase your MacBook and restore factory settings before selling it. Everything on your Mac hard drive, reinstall macOS, and restore your machine to its original factory settings. Note that before restoring your Mac computer to default settings make sure you’ve back up your important information, if you don’t they’ll be no way for you to get this. If you haven’t here been I how you can backup your data before restoring your computer.
Backing up a Mac computer is easy, you just got to back up what’s you need. Like the important document, videos, and other files. They’re two ways for you to back your files; either by saving the files externally or by using iCloud.
Back up your Mac with Time Machine
To back up your files with your external hard drive is easy with Time machine, if you know how to do this before you can skip and start the process of restoring your Mac to default settings. You can back up your Mac files to your external storage device. See the list of external devices supported by Time Machine.
1. If you already have an external hard disk drive connected on the same Wi-Fi network with your Mac computer. Select your storage device as the backup disk.
2. Open Time Machine preferences from the Time Machine menu in the menu bar. Or choose Apple menu > System Preferences, then click Time Machine. Click Select Backup Disk and select the drive you want to use for backup.
After you successfully back your data and files it time for you to sign out. And of course you’re not only signing out of iCloud but other account as well. If you have any link account with your Mac, now is the right time to remove them or unlink it. Here’s how you can sign out your iCloud account from your Mac computer.
Erase and factory reset your Mac. To avoid power outage, plug in your power adapter to begin the process of erasing your hard drive. And make sure your Mac is connected to the internet because that’s what you will use to reinstall macOS. Apple allows you to download the OS from their server.
1. Click on the Apple logo in the top-left corner of your Mac computer screen, and select Restart on the drop-down menu to begin the process.
2. Before your Mac fully restart, quickly press the Command key + R together and keep it on hold until your Mac shows an Apple logo, a spinning globe, or another startup screen. After this, it’ll take you to macOS Recovery mode. Disk Utility.
3. On the page, enter your password as prompted, and the macOS utility pop-up will appear on your screen. Then click on Disk Utility on the list and click Continue.
4. On the next page you will see your Mac’s startup disk is listed on the left, typically named “Macintosh HD” by default unless of course, you renamed it. Another drive is also listed named “Macintosh HD — Data.”
5. Don’t worry about the Macintosh HD — Data if you don’t have a Data drive. And if you have select the ‘Macintosh HD — Data drive’ and click the Minus button in the Disk Utility toolbar. A new window will appear, now click ‘Delete’ to confirm. Delete other Data drives if you have any.
6. After deleting other Data drives, make sure you don’t delete Macintosh HD. On Mac’s startup disk select Macintosh HD and click on the Erase button. Choose a name or leave Macintosh HD at default and select a format. Click Erase and follow the prompt.
Reinstalling the Mac operating system
After your hard drive is successfully erased, close the Disk Utility window and you will be returned to the macOS utility windows, where you will reinstall the mac operating system. Your computer requires an internet connection so it can retrieve new settings from the Apple server and enabled you to install macOS.
1. On the macOS utility window, click on the Reinstall macOS option on the utility list and click on Continue to proceed.
2. Follow the onscreen step for a few confirmations. And enter your password to complete the installation process.
Installing macOS from the web is only available on the newer version of macOS. While this is only available for the newer version, the older version can’t. You can only use the original macOS installation disc to install macOS settings on your computer.
After your macOS installation is complete, you can then set it up with the setup assistant. Or you can leave it that way if you’re giving it out or selling it. To leave the setup assistant, hold down the Command key + Q to close the setup assistant, then click Shut Down. When anyone turned on the Mac, the setup assistant will be waiting.