Fix Corrupted exFat Drive on Mac

exFAT formatting will randomly get corrupted o mac, but the fix is this:

Disk Utility is unable to repair this at first.

Use diskutil list to find the right drive id. You want the id under the IDENTIFIER column.

I will probably be something like disk2s2

Shutdown mac. Start-up in single user mode by holding Command⌘ + S

Run sudo fsck_exfat -d <id from above>. e.g. sudo fsck_exfat -d disk1s3

-d is debug so you'll see all your files output as they're processed.

Answer YES if it gives you the prompt Main boot region needs to be updated. Yes/No?

Files should start being listed.

This process may take hours. When you are prompted Mark volume clean?, enter y

Reboot normally.

Open Disk Utility and you should be able to repair here successfully.

See the apple man page below for details on the fsck_exfat utility.