调整Boot Camp分区引发Fusion Drive故障，求助解决磁盘空间及格式化问题

Hey Erik, sorry to hear you’re stuck with this messy Fusion Drive problem after messing around with Boot Camp partitions. Let’s work through a terminal-based fix since the Recovery Mode GUI isn’t playing nice—this will let you wipe the drive completely and get back to using your full storage space, then restore from your Time Machine backup.

Step 1: Boot into Recovery Mode & Open Terminal #

• Restart your Mac, hold down Command + R until you see the Apple logo or recovery screen.
• Once in Recovery Mode, head to Utilities > Terminal to pull up the command line tool.

Step 2: Map Out Your Drive Structure #

Run this command to see all connected drives and their volume details:

diskutil list

Look for an entry labeled Logical Volume Group—this is your Fusion Drive. Jot down its UUID (a long string of letters/numbers) or disk identifier (like /dev/disk1).

Step 3: Unlock the Drive (If FileVault Encrypted) #

If your Fusion Drive uses FileVault, you’ll need to unlock it first before making changes:

diskutil corestorage unlockVolume <Logical Volume UUID>

Type your FileVault password when prompted and hit enter.

Step 4: Wipe the Broken Fusion Drive Configuration #

This will erase all data (don’t worry, you have that Time Machine backup!) and reset the physical drives to their uncombined state:

diskutil corestorage delete <Logical Volume Group UUID>

Give it a minute or two to finish—this depends on how big your drive is.

Step 5: Recreate the Fusion Drive #

Now let’s combine the physical disks back into a working Fusion Drive:

1. Double-check the physical disk identifiers (usually disk0 and disk1) with diskutil list again.
2. Run this command, replacing disk0s2 and disk1s2 with the correct partition IDs of your physical drives:

diskutil corestorage create "Fusion Drive" /dev/disk0s2 /dev/disk1s2

3. Next, create a usable volume on the new drive group:

diskutil corestorage createVolume <New Logical Volume Group UUID> apfs "Macintosh HD" 100%

Use jhfs+ instead of apfs if you’re running an older macOS version that doesn’t support APFS.

Step 6: Restore from Time Machine #

• Close Terminal and go back to the Recovery Mode main menu.
• Select Restore from Time Machine Backup and follow the prompts to load your saved data onto the newly fixed Fusion Drive.

Once the restore finishes, your Mac should boot up normally with all your storage space restored. You can safely set up Boot Camp again later if you need to.

内容的提问来源于stack exchange，提问作者Erik Hellman