Midget wrote:
Putting it back in the external shell doesn't work as it seems the drive won't even sync with a PC anymore when used as a external.
What exactly do you mean it doesn't sync?
What changed between the time that it worked as an external (ie. before you opened up the case) and now?
Midget wrote:
I'm thinking the next step would be to find a program to try and format the drive without touching the data but I'm hesitent to try something like that until I've thought of everything.
That would be a terrible idea. If you do this, then you might end up with no data at all. And if not, your data will still be encrypted.
The only way for you to recover the data is if you plug it as external using the original (or another identical) usb to sata bridge (ie. the original external USB caddy). Then copy your data off to some other device, format that 3TB and connect it internally. Then copy data back to their place. Make sure your copies are good before you do any copying back and forth.