[Fixed] Erase Assistant Is Not Supported on This Mac (Sonoma)

Erase Assistant simplifies the process of securely erasing your data when you're selling, giving away, or reinstalling macOS on your Mac.

But, you might see the message "Erase Assistant is not supported on this Mac" if your macOS version or chip isn't compatible.

Don't worry! This post will guide you through effective solutions for this issue. Keep reading for more information.

Why Does Your Mac Say "Erase Assistant Not Supported on This Mac"?

If you encounter the message “Erase Assistant Not Supported on This Mac”, it means that your Mac doesn’t support the Erase Assistant feature, which is typically used to securely erase and reset your Mac to factory settings. Here are some reasons why this issue might occur:

• Mac hardware compatibility.
• Outdated macOS version.
• Startup disk configuration.
• Security settings interference.
• Corrupted system files.

What to Do if Erase Assistant Is Not Supported on Your Mac (Sonoma)

After figuring out why your Mac displays "Erase Assistant is not supported on this Mac", it's time to learn some effective fixes or alternative tools for Erase Assistant.

Check Your Mac Hardware

Erase Assistant is typically available on Apple silicon Macs (like M1, M2, etc.) and newer T2-equipped Intel Macs. If your Mac doesn’t fall into these categories, you may see the "Erase Assistant is not supported on this Mac" error.

To check your Mac's hardware, click the Apple menu > System Settings > About > System Report.

Upgrade Your macOS

The Erase Assistant feature is available on macOS Monterey and later. If your macOS is outdated, follow the steps below to update your Mac to the latest version.

1. Click the Apple menu and select System Settings.
2. Click General > Software Update.
3. Click the Upgrade Now button and follow the onscreen download and installation instructions.

Erase Your Mac via Disk Utility

While the "Erase Assistant is not supported on this Mac" issue appears, you can erase and reset your Mac via Disk Utility in Recovery Mode.

Here is how to erase Mac with Disk Utility in Recovery Mode:

Step 1: Boot your Mac in recovery mode.

• For an Intel-based Mac:

1. Restart your Mac.
2. Press and hold the Command + R key combination until the startup screen appears.
3. Enter the password if asked.

• For a Mac with Apple silicon:

1. Go to Apple menu > Shut Down.
2. Press and hold the Power button on your Mac until the system volume and the Options button appear.
3. Click the Options button, then click Continue.

Step 2: Click Disk Utility＞Continue.

Step 3: Select the internal hard drive＞Erase.

Step 5: Click the Erase button.

Bonus: How to Delete Multiple Files Quickly and Permanently

In general, moving the files to the trash does not delete them completely and they still occupy your Mac space. And there are still some leftovers although you uninstalled apps.

To delete multiple files or uninstall multiple apps completely in a time-saving and effort-saving way, you can have a try at BuhoCleaner - a powerful and user-friendly Mac cleaner.

In addition, if you are looking for a safe and permanent way to delete files, BuhoCleaner's Shredder feature helps a lot.

Conclusion

In this post, how to fix "Erase Assistant is not supported on this Mac" and temporary alternative tools for Erase Assistant are introduced in detail.

Hope these methods work for your Mac. Go and fix this tackle issue now!