How to eliminate potential problems on USB Powered Drives and keep them healthy

Great info. HELP. My PC crashed because of a virus while my Passport 2500bmv was plugged in. I was not able to go thru the proper disconnect procedure and now I cannot see any of the files I have saved. How do I access those files?  PS My Passport registers in my F drive and I am able to add new files, however all my previous files appear to still be there because of available space remaining.

Thanks in advance,

Forrest