I accidentally knocked my external hard drive off the table and it became unplugged. When I tried to connect it again, I put in the password, and received a: "The disk you inserted was not readable by this computer message." When I did First Aid for the overall hard drive, it was successful, but when I tried this particular partition, it said: "The First Aid process has failed. If possible, back up the data on this volume." The second partition on the hard drive, which was not connected at the time it was unplugged, works normally. Is there anything else I could try?