I bought an external Elgato Thunderbolt SSD (128GB). After a few months, I decided to turn FileVault on. I shouldn't have done this because it broke my SSD. I was origionally able to fix it by using Terminal to turn off the ecryption and zero the drive. However, it then broke again and now it only show's up in System Information listed as a Thunderbolt adaption. It does not appear in Finder or the Disk Utility, it does not show up in Terminal as "core storage", nor does "diskutil list" find it so I can erase is. Is there any way at all to fix this SSD? Thank you, Steven.