Mac Factory Reset: Password, Steps, and Data Wipe Guide

A Mac factory reset erases personal data, accounts, apps, and settings, then prepares the Mac for a clean macOS installation. If you forgot the login password, start in macOS Recovery and use the account recovery or disk-erasing options available there.

What does a factory reset do to a Mac?

A Mac factory reset is different from signing out. Signing out of an account disconnects that service but leaves files and settings on the Mac. Erasing the Mac removes personal information from its internal storage. A full factory reset combines erasing the data with reinstalling or preparing a clean copy of macOS.

A complete reset normally removes:

• Local user accounts and their passwords
• Documents, photos, downloads, and other personal files
• Installed apps that did not come with macOS
• Saved networks, preferences, and device settings

The Mac hardware and built-in recovery system remain. Depending on the reset method, macOS may remain ready for first-time setup or may need to be reinstalled. Activation Lock can also remain if Find My was not properly disconnected; only the linked Apple Account owner or Apple can resolve ownership verification.

What should you back up and disconnect before resetting a Mac?

Back up anything you may need before erasing the Mac. Erased files may not be recoverable, and this guide does not assume that a later recovery attempt will work.

1. Copy important documents, photos, browser exports, and app data to a trusted backup destination, or complete a Time Machine backup.
2. Confirm that the backup contains the files you expect. Open a few copied files before continuing.
3. Note the Apple Account email address used on the Mac. Apple ID may still appear as the older name in some screens.
4. Sign out of iCloud and turn off Find My when the Mac allows it. Be ready to enter the Apple Account password.
5. Sign out of Messages and other linked services where appropriate.
6. Deauthorize services that limit the number of connected computers, if their account settings provide that option.
7. Disconnect external drives after the backup so they are not erased by mistake.

How do you reset a Mac to factory settings when you know the password?

On a supported Mac running a modern version of macOS, Erase Assistant is the simplest path. Erase Assistant removes accounts and personal data while keeping the operating system ready for setup.

1. Connect the Mac to power and a reliable internet connection.
2. Open System Settings from the Apple menu.
3. Select General, then Transfer or Reset.
4. Select Erase All Content and Settings.
5. Enter the Mac administrator password when prompted.
6. Review the information that will be removed, then follow the prompts to sign out and erase the Mac.
7. Allow the Mac to restart. Do not close the lid or disconnect power during the reset.

On some earlier macOS versions, Erase Assistant appears under System Preferences in the menu bar rather than under General. If no erase option appears, use macOS Recovery and Disk Utility instead.

How do you factory reset a Mac if you forgot the password?

First decide whether you want to keep the files or erase everything. Resetting a local account password preserves data. Erasing the disk removes the account and its files.

To enter macOS Recovery on a Mac with Apple silicon:

1. Shut down the Mac.
2. Press and hold the power button until startup options appear.
3. Select Options, then Continue.

To enter macOS Recovery on an Intel-based Mac:

1. Shut down the Mac.
2. Turn it on and immediately hold Command-R until a startup screen appears.

Recovery may offer a password-reset assistant after you select a user or indicate that passwords were forgotten. Follow the displayed steps to verify the Apple Account or use an available recovery key. Apple Account recovery proves access to the linked account; a local password reset changes the password for a user stored on the Mac.

If the goal is to wipe the Mac, open Disk Utility from Recovery, select the internal startup volume, and choose Erase. Use the format and volume name suggested by Disk Utility. If a volume group option appears, erase the volume group. Quit Disk Utility when erasing finishes.

Erase Assistant generally requires administrator authentication, so it may not work without the login password. Recovery can also require an Apple Account, recovery key, or ownership verification. These protections cannot be bypassed.

How do you reinstall macOS after erasing a Mac?

After Disk Utility finishes, return to the macOS Recovery window and reinstall the operating system.

1. Connect to a stable network and keep the Mac connected to power.
2. Select Reinstall macOS, then Continue.
3. Choose the newly erased internal disk as the installation destination.
4. Follow the prompts and let the Mac restart as needed.
5. Do not put the Mac to sleep or interrupt the installation.

If the Mac is being passed to another person, stop when the setup assistant appears. Do not enter your account details; shut down the Mac so the next owner can complete setup.

What should you do if a Mac factory reset gets stuck or fails?

A mac factory reset can stall because Recovery cannot reach Apple, the internal disk has errors, or the Mac loses power. If Internet Recovery shows a network error, reconnect to a dependable network and try Recovery again. Networks requiring a browser sign-in may not work during Recovery.

If the internal disk is missing, return to Disk Utility and choose the option that displays all devices. Run First Aid on the internal drive, then retry the erase. Stop if Disk Utility reports an error it cannot repair or if no internal physical drive appears.

If macOS installation repeatedly fails, record the exact message and contact official Apple Support through {site}. Ownership documents may be required when Activation Lock or another ownership check remains.

How do you set up a Mac after a factory reset?

When the setup assistant appears, choose the language, region, network, and accessibility settings. Sign in with the correct Apple Account if you are keeping the Mac, then create a new local login password that you can store securely.

To restore your data, select the migration option during setup and choose the available Time Machine or Mac backup. You can also set up the Mac as new and copy selected files later. After setup, check for macOS updates, reconnect trusted services, and confirm that important files open correctly.