Not sure if this is the right place for this. I am having a problem with files on an external HDD. I am moving files over from my windows pc to my Mac and they are not showing up as being on the drive in OS X. Now when I connect the Ex HDD on my Windows PC they are there, but when connected to my Mac they are not there. The Ex HDD is a seagate backup Plus drive and I have reformatted the drive to fat on my Mac and it still is not working. I have also tried and put the file in a spot that it is in the open, but still does not show up. Most files are fine but certain ones just don't work. Any ideas? Thanks.