You may have to format your JetDrive Go when encountering this problem. To format your JetDrive Go, please follow the steps:
Right click on the "Removable Disk" from "My Computer." Select "Format" and click "Start"
Please go to Disk Utility to erase (format) your JetDrive Go. Choose MS-DOS(FAT) or ExFAT as the file format, and click Erase.