Mac Reset Os

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Firstly, go to the main menu by clicking on the Apple icon and choose to restart your system. While the system is restarting, press the Command and R keys at the same time till your Mac enters the Recovery mode. When you get the utility window on the screen, just click on the 'Reinstall macOS' option and continue the process. The first step is to start your Mac in Recovery Mode. To do that, shut down your Mac and then restart it while holding the CMD+R keys. Release the keys when the Apple logo appears on the screen.

These steps apply only to Mac computers with an Intel processor. The steps to erase a Mac with Apple silicon are different.

Before erasing your Mac

  • Make a backup of any files that you want to keep. Erasing your Mac permanently deletes its files.
  • If you want to restore your Mac to factory settings, such as to prepare it for a new owner, first learn what to do before you sell, give away, or trade in your Mac. Then erase your Mac as the final step.

Use Disk Utility to erase your Mac

  1. Start up from macOS Recovery: Turn on your Mac, then immediately press and hold these two keys until you see an Apple logo or other image: Command (⌘) and R.
  2. If asked, select a user you know the password for, then enter their administrator password.
  3. From the utilities window, select Disk Utility and click Continue.
  4. Select Macintosh HD in the sidebar of Disk Utility. Don't see Macintosh HD?
  5. Click the Erase button in the toolbar, then enter the requested details:
    • Name: Macintosh HD
    • Format: APFS or Mac OS Extended (Journaled), as recommended by Disk Utility
  6. Click Erase Volume Group. If you don't see this button, click Erase instead.
  7. If asked, enter your Apple ID. Forgot your Apple ID?
  8. After the erase is done, select any other internal volumes in the sidebar, then click the delete volume (–) button in the toolbar to delete that volume.
    Disregard any internal volume named Macintosh HD or Macintosh HD - Data, as well as any volumes in the External and Disk Images sections of the sidebar.
  9. Quit Disk Utility to return to the utilities window.
  10. If you want to start up again from the disk you erased, select Reinstall macOS in the utilities window, then click Continue and follow the onscreen instructions to reinstall macOS.

If you don’t see Macintosh HD in Disk Utility

Your built-in startup disk should be the first item listed in the Disk Utility sidebar. It's named Macintosh HD, unless you changed its name. If you don't see it there, choose Apple menu  > Shut Down, then unplug all nonessential devices from your Mac and try again.

If your disk still doesn't appear in Disk Utility, or Disk Utility reports that the erase process failed, your Mac might need service. If you need help, please contact Apple Support.

Learn more

For more information about using Disk Utility, see the Disk Utility User Guide.

Reset Mac To Factory Settings

Dec 21, 2020 • Filed to: Solve Mac Problems • Proven solutions

Recovery Mode in OS X provides a set of solutions for users to utilize when users need to repair and reinstall their operating system in an emergency. You can also reset the Mac password using recovery mode if needed. There are several ways to boot Mac into recovery mode. If you find one method overwhelming, there are several other alternatives you can use. We will walk you through the different ways on how to boot Mac into recovery mode so that they will become undoubtedly useful in a rare emergency.

Part 1: How to Boot Mac in Internet Recovery Mode

Along with the introduction of a locally stored recovery volume, Apple introduced its Internet Recovery service that allows your operating system to download contents of the recovery hard disk partition from the company's service. This option is great to use when your local drive is completely corrupted and you no longer can access locally-stored recovery tools.

Related: If you boot your Mac for lost data recovery, we suggest that you can try recovering files from dead Mac on your own.

To launch Internet Recovery, make sure your Mac is connected to a WiFi network and follow the steps below:

  1. Reboot your Mac.
  2. Hold the 'Options', 'Command', and 'R' buttons until the boot chimes are triggered.
  3. Wait until the system finished downloading the recovery tools from Apple's website.

It is noted that you are unable to boot Mac into Recovery Mode if you are using devices older than the ones below:

  • MacBook Pro (13-inch, Early 2011)
  • MacBook Pro (15-inch, Early 2011)
  • MacBook Pro (17-inch, Early 2011)
  • iMac (21.5-inch, Mid 2011)
  • iMac (27-inch, Mid 2011)
  • MacBook (13-inch, Mid 2010)
  • MacBook Pro (13-inch, Mid 2010)
  • Mac mini (Mid 2010)
  • MacBook Pro (15-inch and 17-inch, Mid 2010)
  • iMac (21.5-inch and 27-inch, Mid 2010)
  • MacBook Air (11-inch and 13-inch, Late 2010)
Mac Reset Os

Part 2: How to Create a bootable drive into Recovery Mode

You can create a bootable drive to store an OS X Recovery Disk so that you can access recovery tools anytime, anywhere. It would be great if you could invest in a high-capacity USB 3.0 flash drive to store the required tools.

There are plenty of articles outlining how you can create a bootable OS X Recovery Disk, including ours. Once you have this established, you can follow these steps to get your Mac into Recovery Mode:

  1. Reboot your Mac.
  2. Hold down 'Option' on your keyboard once you hear the chime sound.
  3. Attach your bootable OS X Recovery Disk to your Mac and select it from the prompt list.
  4. Your Mac will launch into Recovery Mode and you can start fixing your Mac.

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As you can see, there are plenty of methods you can use to boot Mac into Recovery Mode. There is no need to panic when you find yourself in trouble - just choose and master the method that seems least intimidating to you and you will be well on your way. After you boot Mac into Recovery Mode, you can also restore your data on Mac.

How To Reset Macos Catalina

Related: read and know more complete details on how to create a bootable drive on Mac.

Part 3: How to Boot Mac with Installation Disk

If you are using an older Mac, it probably comes with a grey recovery DVD that you can use to run recovery routines. If you had bought a copy of a newer operating system, you can also use the installation disk to perform recovery.

Macos recovery mode

It is the easiest way to go into Recovery Mode and here is how you can do it:

  1. Insert the grey DVD and reboot your Mac.
  2. Hold down 'C' on your keyboard until you hear the boot chimes.

The recovery tool will take some time to load. Follow the wizard that will put your Mac into Recovery Mode.

Part 4: How to Boot Mac into Recovery Mode with Local Recovery

  1. Reboot your Mac.
  2. Hold the 'Command' and 'R' buttons until the boot chimes are triggered.
  3. You will see the OS X utility window that will prompt you to choose one of the four options.

Part 5: How to Boot Mac into Recovery Mode from Time Machine

Mac Reset Os

It is really important to keep backups of your machine and Apple facilitates this with its Time Machine feature. It would be best to store your backup on an external drive so that you can initiate Recovery Mode using this when your hard drive is wiped out.

How To Reinstall Mac Os System

Follow these steps to boot Mac into Recovery Mode:

  1. Reboot your Mac.
  2. Hold down the Option button when the startup chimes sound.
  3. Connect your Time Machine drive. It will take some time for the system to detect the drive. You might need to key in your password.
  4. Choose the drive to launch your Mac into Recovery Mode.

After all the above methods, you finally fail to boot your Mac into Recovery mode. Don't worry. We also provide further solutions for you - Fix 'Cannot boot into Recovery mode'. For those who need the data recovery solution, Recoverit would be a nice option. Free download and try it now.

Video Tutorial on How to Boot Mac into Recovery Mode

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