I tried opening up Testdisk
The other drives appear to be reading just fine they all show up as Disk /dev/sxxxxxxx
However this time the K Drive is simply Drive K: - 4000 GB /3726 GiB - Seagate Backup +
It is defaulting to the None Partition Table type
Am I screwed?

What should my next course of action be? I could not find a big enough drive to back this up so I may be out a handful of projects but I still see that window s explorer can see there is content on the drive but I don't know how damaged if it is damaged or if something else is going on?
Any assistance would be helpful.
https://imgur.com/a/QxI4u1D