How to Properly Erase a MacBook Before Selling or Returning It

Quick answer

The correct order is always the same: back up → sign out of your Apple Account and turn off Find My → only then erase the Mac. On a Mac with Apple silicon or the T2 chip running macOS Monterey 12 or later, you can use Erase All Content and Settings—it handles signing out and erasing the device in a single assistant. On an older Intel Mac without T2, or on an older operating system, you must sign out manually, erase the Mac with Disk Utility in macOS Recovery, and reinstall macOS. Deleting the user account or simply „cleaning up the desktop" is never enough before handing the device over.

The most common scenario behind this article is not a private marketplace sale. It is a company returning or reassigning a former employee’s laptop, only to discover that the Mac asks for someone else’s Apple ID when switched on—and nobody knows whose it is.

The sequence of steps you cannot skip

1. Create a backup. Erasing the Mac permanently removes its files; a completed Time Machine backup can later be used to restore them on a new computer. On newer systems, the erase assistant asks whether you want to back up the Mac before resetting it—but relying on that prompt is an unnecessary risk.
2. Sign out of your Apple Account and turn off Find My. This step determines whether the next user will be able to use the Mac. More details follow below.
3. Erase the Mac using one of the two methods appropriate for its generation and operating system.
4. Do not complete Setup Assistant. If the Mac should be handed over in an „out-of-the-box" state, leave it on the first Setup Assistant screen after it restarts, then press and hold the power button to switch it off.

The order matters more than the individual steps. An erased Mac that has not been signed out is a worse starting point than one that is neither signed out nor erased—the data is gone, but the lock remains.

Why deleting the user is not enough

Deleting a user account removes its home folder. However, it does not affect any of the things that make the Mac „yours":

• the Apple Account signed in on the system and the status of Find My,
• Activation Lock, which is linked to the account rather than the user profile,
• iMessage and iTunes authorizations on older systems,
• paired Bluetooth accessories, whose names often include your name,
• data left outside the home folder—shared folders, additional volumes, or a Boot Camp partition.

For the same reason, simply reinstalling macOS „over the top" is not enough. The operating system is replaced, but the signed-in account and lock remain.

Which method applies to your MacBook

Two things determine the correct method: the type of chip and the macOS version. Erase All Content and Settings is available only on a Mac with Apple silicon or the Apple T2 Security Chip, and only with macOS Monterey 12 or later.

You can find the model identifier in System Information on a running Mac. If you are unsure which generation you have, see how to identify the exact Apple device model before requesting service.

Method A: Erase All Content and Settings

1. macOS Ventura 13 or later: Apple menu → System Settings → General in the sidebar → scroll down on the right to Transfer or Reset → Erase All Content and Settings.
2. macOS Monterey 12: Apple menu → System Preferences → select Erase All Content and Settings from the System Preferences menu in the menu bar.
3. The erase assistant opens. Sign in as an administrator if prompted.
4. You may be offered the option to back up the Mac using Time Machine—use it if you do not already have a backup.
5. Review the summary of what will be turned off or erased. This will not affect the settings or content of your other Apple devices. Click Continue.
6. When prompted to sign out of your Apple Account, enter your password. This is the step that turns off Activation Lock—do not skip it.
7. Confirm Erase All Content and Settings. The Mac restarts and may ask you to connect a Bluetooth keyboard and select a Wi-Fi network for activation.
8. Setup Assistant appears after activation. Do not continue through it—press and hold the power button until the Mac switches off.

If the feature is missing or fails, that does not necessarily mean there is a fault: either the Mac does not meet the requirements for the feature because of its chip or operating system version, or the disk contains another volume—typically left over from Boot Camp—that must be removed separately.

Method B: An older MacBook or older operating system

With this method, you sign out manually and erase the Mac from macOS Recovery.

1. Sign out. On macOS Catalina 10.15 and earlier, first open iTunes and select Account → Authorizations → Deauthorize This Computer. Then sign out of iCloud (Ventura and later: System Settings → your name → Sign Out; Monterey through Catalina: System Preferences → Apple ID → Overview → Sign Out), and finally open Messages and select Settings → iMessage → Sign Out.

2. Consider your Bluetooth accessories. If they are being handed over with the Mac, check whether their names include your name. If you are keeping them and they will remain within range, unpair them—but be careful: if they are your only keyboard and mouse, doing so may prevent you from completing the rest of the procedure.

3. Start the Mac in macOS Recovery and open Disk Utility.

4. Erase the startup disk. Select Macintosh HD in the sidebar, click Erase, and enter the following:

If you previously created any additional internal volumes, erase each of them individually in the same way.

5. Reinstall macOS from Recovery. When Setup Assistant appears after the restart, press Command-Q so that the Mac remains in its out-of-the-box state.

6. Reset NVRAM. On Intel Macs, this removes user settings from memory and restores certain security features that may have been changed.

If Macintosh HD does not appear in Disk Utility at all, switch off the Mac, disconnect everything that is not essential, and try again. If the disk still does not appear or erasing fails, there may be a hardware fault—in which case the problem requires diagnostics rather than a different procedure.

Activation Lock: why buyers do not want a Mac that is still signed in

Activation Lock is enabled when Find My is enabled, and it is disabled by turning off Find My. It requires a Mac with Apple silicon or the T2 chip running macOS Catalina 10.15 or later, the default security settings, and two-factor authentication for the Apple Account.

For selling or handing over a Mac, this has three implications:

• Signing out is not a formality. A Mac that is still signed in asks the new owner for someone else’s account credentials and cannot be activated without them. In practical terms, you are selling the buyer a brick.
• It can also be done remotely. If the Mac is offline or you have already handed it over, sign in at iCloud.com/find, select the Mac, and click Remove.
• The lock must not be bypassed. At ITHOPE, we do not bypass Activation Lock or attempt to do so. We do not accept devices for service unless ownership and access to device management can be demonstrated.

If you are buying a used MacBook, reverse the order: have the seller erase the Mac and sign out before you pay, then test the device after its first activation. For guidance on whether an older model is still worth buying, see whether to repair an older MacBook or buy a new one.

Company handovers: make it a process, not a one-off task

Companies encounter the same mistake in a different form. An employee leaves, the laptop remains, their personal Apple Account is still signed in, and nobody knows the password. This is not a technical problem—it is a missing policy.

The minimum process worth introducing is:

1. A company device must use a company account, not the employee’s personal Apple ID.
2. Erasing and signing out must take place during the handover, while the departing user is present—not a month later.
3. Work data must be backed up before erasure, and the backup must be taken over by a manager or administrator, not the departing employee.
4. The handover record must include the model identifier, serial number, Activation Lock status, and a signature. It must not include passwords.
5. For a managed fleet, the administrator is responsible for removing the device from management, not the repair shop or the user.

For information on connecting this process to asset records and approvals, see company MacBook and iPad servicing in Brno.

The five mistakes we see most often

• Deleting the user instead of erasing the Mac. The Apple Account and Activation Lock remain.
• Reinstalling macOS without signing out. New operating system, old lock.
• Erasing without a backup. Erasing permanently removes the files—and anyone who remembers one important folder only after the sale is out of luck.
• Completing Setup Assistant. The Mac is then handed over with a new, randomly created account instead of a clean welcome screen.
• „I’ll deal with it when the buyer contacts me." You can sign out remotely, but by then a dispute over a refund may already be under way.

If you would rather not deal with it yourself

We can erase a MacBook for you before it is sold, returned at the end of a lease, or reassigned within a company—including checking its Activation Lock status, backing up work data before erasure, and recording the process in a handover report. We are not an Apple Authorized Service Provider, and we do not accept devices for service without demonstrable ownership or access to device management.

Contact us through the contact page and include the Mac’s generation or model identifier, its macOS version, and whether it is under company management. If the device is also behaving unexpectedly, it makes sense to begin with diagnostics and repair approval—erasing the Mac and addressing a hardware fault should not be treated as a single step.

Frequently asked questions

I am selling a 2017 MacBook Air—is deleting the user account enough?

No. The 2017 MacBook Air (MacBookAir7,2) is an Intel model without the T2 chip, so it does not support Erase All Content and Settings. Sign out of iCloud and iMessage, deauthorize the computer in iTunes on older systems, erase the Mac using Disk Utility in Recovery, reinstall macOS, and reset NVRAM.

Where can I find Erase All Content and Settings on a 14″ MacBook Pro from 2023?

On a Mac with Apple silicon running macOS Ventura 13 or later, open Apple menu → System Settings → General → Transfer or Reset → Erase All Content and Settings. The assistant prompts you to sign out of your Apple Account, so Activation Lock is handled as part of the same process.

Do I have to turn off Find My before selling the Mac?

Yes—while Find My is enabled, Activation Lock is enabled as well. On the Mac, turn it off by opening System Settings → your name → iCloud → See All → Find My Mac. On newer operating systems, the Erase All Content and Settings assistant handles this for you. If you no longer have the Mac, you can remove it from your account at iCloud.com/find.

The buyer says the Mac is asking for someone else’s Apple ID. What should I do?

Sign in at iCloud.com/find with your account, select the Mac, and click Remove. If you do not know the account linked to the device but have proof of purchase, submit a request to Apple Support. Bypassing the lock is not a solution, and no reputable service provider will offer to do it.

What should I do with a former employee’s company MacBook if I do not have their password?

If the device is under company management, the administrator should handle it through the management system. If it is not managed and the former employee’s personal Apple Account is signed in, you need their cooperation or must contact Apple Support with proof of ownership. In the future, a policy is cheaper than a recovery procedure: company devices should not be signed in to personal accounts.

Sources

• Apple: Erase your Mac and reset it to factory settings
• Apple: What to do before you sell, give away, trade in, or recycle your Mac
• Apple: Erase an Intel-based Mac using Disk Utility
• Apple: Activation Lock for Mac
• Apple: How to start up from macOS Recovery
• Apple: How to reinstall macOS
• Apple: Mac computers with the Apple T2 Security Chip
• Apple: Mac computers with Apple silicon
• Apple: Back up your Mac with Time Machine