How to Factory Reset a Mac Computer: Step-by-Step Guide

To factory reset a Mac computer, back up your files, disconnect your Apple Account, erase the internal storage, and reinstall macOS. Apple silicon Macs and Intel Macs use different startup steps, so identify the processor before entering macOS Recovery.

A factory reset permanently removes personal files, accounts, settings, and installed apps. Use these instructions only on a Mac you own or are authorized to erase.

What should you do before factory resetting a Mac?

Prepare before you factory reset a Mac computer because erased files normally cannot be recovered from the Mac. Keep the computer connected to power and make sure a reliable internet connection is available for activation or macOS installation.

1. Back up documents, photos, and other important files with Time Machine or another trusted backup method.
2. Open a few important files from the backup to confirm that they were copied correctly.
3. Write down the password for the Mac administrator account. macOS Recovery or Erase Assistant may request it.
4. Make sure you know the Apple Account email address and password associated with the Mac.
5. Sign out of Apple services and turn off Find My if the Mac will belong to someone else.
6. Disconnect external drives after the backup finishes so that you do not erase them accidentally.

If the Mac uses FileVault disk encryption, the administrator or recovery credentials may be required. These steps do not bypass an unknown password, Activation Lock, or another owner’s account.

How do you check whether a Mac has Apple silicon or an Intel processor?

Apple silicon is Apple’s processor family identified by names such as M1, M2, or M3. The processor type determines how the Mac enters macOS Recovery.

1. Choose the Apple menu in the upper-left corner of the screen.
2. Select About This Mac.
3. Look for a line labeled Chip or Processor. A Chip entry with an M-series name means Apple silicon; a Processor entry naming Intel means an Intel Mac.
4. Note the macOS version displayed in the same window.

If the Mac cannot start normally, check its original documentation or identifying information before choosing a reset procedure. Do not guess, because Intel startup-key commands do not open Recovery on an Apple silicon Mac.

How do you factory reset an Apple silicon Mac?

On a working Apple silicon Mac with a recent macOS version, first check System Settings under General, then Transfer or Reset, for Erase All Content and Settings. Erase Assistant is Apple’s guided tool for removing personal data and settings while keeping the installed operating system ready for setup.

If that option is unavailable or the Mac cannot start normally, use macOS Recovery:

1. Shut down the Mac completely.
2. Press and hold the power button until Loading startup options appears.
3. Select Options, then Continue.
4. Choose an administrator account if requested and enter its password.
5. If Recovery Assistant offers Erase Mac, select it and follow the confirmation prompts.
6. If Erase Mac is not offered, open Disk Utility, select Macintosh HD, and choose Erase or Erase Volume Group. Keep the format and scheme recommended by Disk Utility.
7. Quit Disk Utility after erasing the internal disk.
8. Select Reinstall macOS and follow the prompts. Do not close the lid or disconnect power during installation.

When Setup Assistant appears after installation, stop there if another authorized user will set up the Mac. Do not create a new personal account.

How do you factory reset an Intel Mac?

To factory reset an Intel Mac computer, start macOS Recovery with a keyboard shortcut, erase the startup volume, and reinstall macOS.

1. Shut down the Mac.
2. Press the power button, then immediately hold Command-R until an Apple logo or another startup screen appears.
3. Select an administrator account and enter its password if requested.
4. Open Disk Utility from the Recovery window.
5. Select View, then Show All Devices if the internal storage is not fully visible.
6. Select Macintosh HD or the appropriate startup volume. Choose Erase Volume Group when available; otherwise choose Erase.
7. Use the disk name and format suggested by Disk Utility. Do not select an external backup drive.
8. Quit Disk Utility when erasing is complete.
9. Select Reinstall macOS and complete the onscreen steps.

Command-R normally offers the recovery system associated with the Mac. If local Recovery does not load, an Intel Mac may support internet recovery through Option-Command-R or Shift-Option-Command-R.

How do you sign out of Apple ID and iCloud before resetting a Mac?

Signing out helps remove personal iCloud data from the Mac and prevents Find My or Activation Lock from keeping the computer associated with your Apple Account. Apple ID may be called Apple Account in newer software.

1. Open System Settings and select your name. In older macOS versions, open System Preferences and select Apple ID.
2. Choose Sign Out and follow the prompts. Save a local copy only if needed before erasing the Mac.
3. Turn off Find My Mac when prompted and enter the Apple Account password.
4. After signing out, confirm that your name is no longer shown as the active account in iCloud settings.

If the Mac was erased before sign-out, activation may still request the associated Apple Account. The account owner must remove the association through Apple’s account or device-management options; resetting the disk does not bypass Activation Lock.

What happens after a Mac factory reset?

After a successful factory reset, the Mac restarts into Setup Assistant, the sequence of screens used to choose a region, connect to a network, and create or restore an account. The Mac may first activate online and can restart several times while macOS is installed.

If you are keeping the Mac, continue through Setup Assistant. Migration Assistant may offer to restore apps, accounts, settings, and files from a Time Machine backup or another Mac.

If someone else will configure the Mac, leave it at the initial Setup Assistant screen and shut it down. This keeps your personal information out of the new setup.

What should you do if Mac Recovery Mode will not start or the reset freezes?

• Apple silicon Recovery does not appear: Shut down fully, then hold the power button continuously until startup options appear. A quick press starts the Mac normally.

• Intel Recovery does not appear: Restart and hold Command-R immediately. Use a built-in or wired keyboard if a wireless keyboard connects too late.

• A globe or network error appears: Internet recovery needs a stable connection. Try another trusted network and avoid networks that require a browser sign-in page.

• The internal disk is missing: In Disk Utility, select View and Show All Devices. If the physical internal drive still does not appear, stop and seek authorized hardware support.

• Erasing or installation appears frozen: Keep the Mac connected to power and allow ongoing disk or installation activity to finish. If there is no progress and the Mac becomes unresponsive, restart into Recovery and try again.

• Activation Lock appears: Enter the Apple Account previously linked to the Mac. A factory reset cannot remove another person’s account lock.