Data Rescue 3 External Drive 3.2.3

Data Rescue is the #1 selling, most-awarded recovery software on the Mac platform.

External, non-boot drives that show up in Disk Utility, but will not mount can be recovered with Data Rescue 3 External Drive Recovery. If you've deleted files from an external, non-boot drive, you can use Data Rescue 3 External Drive Recovery to scan that drive to find previously-deleted files.