Part way through the initial analysis I was given an error message about the Invalid FAT Boot Sector; and when I reached the end of an initial analysis I was greeted with the following error message about it being too small and unrecoverable:

I am currently in the process of a Deeper Scan, and have received the same error message about the Invalid FAT Boot Sector:

As there is a couple of hundred GB worth of files on the 1TB hardrive, I am wondering what my next step is once this deeper scan finishes (on 72% as I type this)?