Sorry I'm learning, but I really appreciate the help. Did you mean "doesn't"? If it does recognize the file system why can't it mount them? I tried something in the meantime, I rebooted Ubuntu, formatted one of the drive in exFAT, move some of my files to it then tried to mount it in Unassigned Devices and it didn't work either.
Am I missing something? I though I would be able to move my existing files using this plugin but no matter how are format the drives, it's not being recognized. Am I doing it wrong?
I'm not sure how I would do that, Ubuntu is on the drive that will become my cache drive. The only reason I can still boot it is because I didn't add the cache drive yet. I only have one computer in which I can connect my 3TB and 4TB drives.