I have a 1 TB passport I formatted for Mac and PC. It has worked flawlessly for a year or two exclusivley on the macbook air. I hooked it up a couple of days back and my mac wont recognize it anymore, I tried on my wifes PC and it comes up no problem. I have tried turning on and off the mac but nothing seems to help. Since I can’t access it I have no idea how to fix. Any help is greatly apprecited.