My Passport Ultra- Passed all tests w/ Data Lifeguard and Drive Utilities but cannot add new files and says dirty disk

I am really baffled here. I bought this awesome 4 TB Drive My Passport Ultra in October to organize and go thru all my old hard drives on one external drive. It has been working great till recently I received a dirty bad disk error. I ran the WD Drive Utilities and the LifeGuard the full long tests and everything passes. I tried then uncheck and rename all the files not read only and in the middle it said dirty bad dsk again. What is going on? I cannot copy or move any files to and from this drive now. Please help someone thanks in advance


Have you try taking ownership of the files?

See if this helps