|Hi Finnyd, |
sorry the other fella didn't have a definitive answer for you.
You will need to attempt a data recovery but this will require some simple software and a little instruction. If this is a secondary drive(I assume) then ignore the first part about going to a different computer)
Please refer to my existing article in our companies self help section for all the details you will need on recovering from a logical failure. Once you have recovered your files, you can then re-initialize and reformat the drive, but never trust a single device. Keep it backed up on at least one other device if not more.
Also if you cannot retrieve the data through simple recovery techniques, feel free to submit it for professional recovery if the data is worth said effort.