Did you really just format that external disk? Recover its data on macOS with data recovery software.
Method 1
Recover with data recovery software
Step 1:
Download, install and start the recovery software
Step 2:
Select a disk to scan for deleted data
Step 3:
Restore your data to a designated storage location
Best 3 data recovery software for Mac
Updated 24 January. 2020
Free, Professional $49.95, Ultimate $59.95, Technician $299.95
Free recovery: Free recovery - 100 MB
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Method 2
Recover from data loss using your backups
Step 1:
Start your backup and recovery tool
Step 2:
Determine if you have a backup of the data in question
Step 3:
Use the backup media to recover your selected data
Method 3
Send your storage device out for physical data recovery
Step 1:
Bring your machine to a reputable recovery service
Step 2:
Wait patiently for your data to be recovered
Step 3:
Pay the man and get your computer and its data back