How to Wipe Your Mac Before Selling: 2026 Guide

The right way to wipe a Mac in 2026 is mostly painless, mostly fast, and mostly different from what most blog posts written before 2021 will tell you. Apple Silicon and T2-equipped Intel Macs got a one-click “Erase All Content and Settings” feature that does the whole job correctly. Older Intel Macs still need the manual Recovery process.

I’m going to walk through both, plus the specific gotchas that make people lose data or, worse, hand over a Mac that’s still locked to their Apple ID.

First: which Mac do you have?

This determines which wipe procedure to use.

• Apple Silicon Macs — anything with an M1, M2, M3, or M4 chip. Released late 2020 onward.
• T2-equipped Intel Macs — most Intel Macs from 2018–2020. Includes iMac Pro (2017), MacBook Pro (2018+), MacBook Air (2018+), Mac mini (2018), Mac Pro (2019), iMac (2020).
• Pre-T2 Intel Macs — older models, including most pre-2018 MacBooks and iMacs.

Check yours: Apple Menu → About This Mac. The Chip (or Processor) line tells you. If it’s Apple M-something, you’re Apple Silicon. If it’s an Intel Core i-something, look up the year — anything 2018+ probably has T2; before that, probably not. You can also check System Information → Controller for “Apple T2 Security Chip.”

The 5-minute method: Erase All Content and Settings

For Apple Silicon and T2 Macs running macOS Monterey (12.0) or later, there’s a one-click wipe that’s modeled after iPhone’s reset flow. This is the right method for these machines.

Before you click Erase

1. Back up. Time Machine, iCloud, or both. If you don’t have a backup and the data matters, do not proceed.
2. Sign out of iCloud. System Settings → [Your Apple ID] → Sign Out. The Erase flow does this too, but doing it manually first is more reliable.
3. Sign out of iMessage. Messages → Settings → iMessage → Sign Out.
4. Deauthorize licenses. Adobe Creative Cloud: sign out from the app. Apple Music/iTunes: Account → Authorizations → Deauthorize This Computer. Microsoft 365: sign out of one of the apps. Anything else with a per-device license — sign out.

Run the wipe

System Settings → General → Transfer or Reset → Erase All Content and Settings.

You’ll get an Erase Assistant. It walks through:

1. Admin password
2. Time Machine backup confirmation (skip if you’ve already done it)
3. Apple ID password (final iCloud sign-out)
4. Confirmation

Click through. The Mac restarts, takes 5–10 minutes, and comes back at the Welcome / Hello screen. That’s it. Disk encrypted with FileVault, encryption key destroyed, data effectively gone.

When the Welcome screen appears, shut down using the power button. Don’t click through Setup — leave that for the buyer.

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Why “Erase All Content and Settings” is enough

A common worry: shouldn’t I “secure erase” multiple times? On modern Macs with SSDs and FileVault, the answer is no. Here’s why:

• FileVault is on by default on Apple Silicon and T2 Macs. Your entire data partition is already encrypted.
• Erase All Content and Settings destroys the encryption key. Without it, the encrypted data is mathematically irrecoverable.
• SSDs don’t support overwrite verification the way HDDs do — wear leveling means “overwriting” doesn’t actually overwrite the same physical cells. It’s both unnecessary and unhelpful.

The 7-pass DoD wipe was an HDD-era practice. On 2020s Mac hardware it’s irrelevant.

The longer method: Recovery wipe (older Intel Macs)

If your Mac is pre-T2, you don’t get the one-click flow. You’ll do this manually via Recovery.

Step 1: back up and sign out

Same as above — Time Machine backup, iCloud sign-out, iMessage sign-out, license deauth.

Step 2: boot to Recovery

Shut down the Mac. Power it on while holding Cmd-R. Keep holding until you see the Apple logo or a spinning globe. (Globe = Internet Recovery, that’s also fine, just slower because it downloads the recovery system over your network.)

You’ll be prompted for your Wi-Fi network and possibly an admin password. Provide them. The Recovery menu appears.

Step 3: erase the disk

In Recovery, choose Disk Utility. In the sidebar, select your internal drive (it’s usually called “Macintosh HD” or similar). Click Erase. Set:

• Name: Macintosh HD
• Format: APFS (or APFS Encrypted if you want to leave FileVault enabled — but the buyer will set their own password during Setup, so unencrypted APFS is fine for resale)
• Scheme: GUID Partition Map (only shown if you click Show All Devices first)

If your Mac is old enough that you have a “Container disk1” that holds Macintosh HD, select the parent container and erase that. macOS will recreate the volume structure.

Click Erase. Takes 1–5 minutes for the metadata wipe. On an SSD, this is sufficient — the data was encrypted by FileVault, the encryption key just got wiped, you’re done. On a spinning HDD with FileVault disabled, you’d want to use the “Security Options” slider during Erase to do at least a single pass. (FileVault was disabled by default on older Intel Macs, so check this honestly.)

Step 4: reinstall macOS

Quit Disk Utility. Back at the Recovery menu, choose Reinstall macOS. This will reinstall the version that was on the Mac (or the closest available — sometimes Internet Recovery installs the version the Mac shipped with). Takes 30–60 minutes.

When it finishes, the Mac boots to Setup Assistant. Quit Setup Assistant with Cmd-Q. The Mac will sleep. Shut it down via power button.

The buyer will see Setup Assistant on first boot.

Verify the wipe worked

After the wipe:

1. Power the Mac on. You should see the Welcome / Hello screen with the language picker.
2. On your iPhone or another device, open Find My → Devices. The wiped Mac should not appear.
3. Sign into appleid.apple.com → Devices. Confirm the Mac is gone.

If the Mac still appears in your Apple ID, it means Activation Lock is still tied to it — the buyer will not be able to use it. Remove it from your Apple ID before handing it over.

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Common gotchas

A few things that bite people:

• Activation Lock not cleared. This is by far the most common issue. Always sign out of iCloud BEFORE the erase. Confirm afterward via Find My.
• EFI/firmware password set. If you set one years ago and forgot, the Mac will ask for it before macOS even loads. Disable it (Recovery → Utilities menu → Startup Security Utility) before selling.
• Disk Utility shows multiple containers. Older Macs sometimes accumulate APFS containers. Erasing only the visible volume isn’t enough. Show All Devices and erase the physical disk if needed.
• Lost Apple ID password. If you forget your password mid-erase, the wipe halts. Reset at iforgot.apple.com, then resume.
• Accidentally signing back in during Setup. When verifying the wipe, don’t click through Setup with your own Apple ID. Just confirm the welcome screen appears, then shut down.

What if the Mac won’t boot?

If the Mac won’t even reach Recovery, you’ve got a different problem — possibly a hardware issue. You can still wipe the data: pull the drive out (on older models with replaceable storage) or use Target Disk Mode (Cmd-T at boot on Intel Macs, then connect to another Mac via Thunderbolt). On Apple Silicon, the equivalent is Mac Sharing Mode via the boot picker. From there you can erase the volume from another Mac.

If the Mac is fundamentally broken — won’t power on, screen dead, etc. — sell it as parts/repair, and pull the drive if you can. Never sell a Mac as “for parts” with your data still on it.

Selling a wiped Mac

The wiped Mac is now ready to hand over. Include the original charger if you have it. If the buyer wants to test before paying, that’s normal — they can run through Setup Assistant on the Welcome screen to confirm the machine works, then choose “Shut Down” instead of completing setup.

If you’re shipping, pack the Mac in its original box if possible. If not, plenty of foam, an actual box (not just a padded mailer for full-size MacBook Pros), and tracking with signature confirmation. Don’t ship a $1500 laptop with no insurance.