How to Erase a MacBook's Fusion Drive

When breaking apart a Fusion Drive on your MacBook, it's essential to delete the logical volume and group before proceeding with any other steps. To do this, you'll need two pieces of information: the logical volume universally unique identifier (UUID) and the logical volume group UUID.

On your MacBook, open Terminal and type `ioreg -l` to display the list of logical volume groups. In this case, you're looking for the UUID `3BAEF8EE- B7F1-4094-88D4-58CECD811A72` for the logical volume and `CE7D4BA0-BF9E-446F-83AC-8080A77D1AE4` for the logical volume group.

Before you start, it's crucial to disconnect any additional drives or eject them from your MacBook. This will ensure that you're targeting the correct Fusion Drive. However, other connected non-Fusion Drives may also be displayed as logical volume groups.

To open Terminal in Recovery Mode, restart your MacBook and hold down the Command + R keys until the Utilities window appears. Select Terminal from the menu and type `diskutil list` to display a list of all available disks.

To erase your Fusion Drive, follow these steps:

1. Quit Disk Utility and re-open it.

2. In the sidebar, select the Fusion Drive you want to erase (it should be listed as 'Macintosh HD').

3. Click the Erase icon in the toolbar and enter `Macintosh HD` for the Name. Select `Mac OS Extended (Journaled)` for the Format.

4. Click the Erase button to complete the process.

Important: Erasing your Fusion Drive will permanently delete all data on the drive. Make sure you have backed up any important files before proceeding.

Additionally, if you're running macOS Mojave with an APFS-formatted Fusion Drive, you'll need to perform extra steps before erasing the drive. These instructions are only applicable to HFS+ Fusion Drives and not compatible with APFS-formatted drives.

Remember to always exercise caution when erasing data from your MacBook's storage devices.

Macbook erase disk