- Click Finder - Bottom left of your Dock menu.
Navigate to the following folder.
- Click Applications
- Click Utilities
- Click Disk Utility
- Click on your External Drive - It will most likely have a different name than "ESD-USB"
- Click Erase at the top Menu
- Name the drive something simple. No Spaces
- Format = Needs to be "ExFat"
- Click Erase and you are done.