USB PROBLEM
Recently I bought a USB 256 GB and I spent hours transferring files into it.
The result was, when I checked if it could be read, I could see the folders, but some were empty and others not.
Then I tried dragging the files again, some could be read other folders still appear empty, and for the life me, I can't figure it out. I use mac desktop.
Its never happened before.
MacBook Pro (Retina, 13-inch, Mid 2014), iOS 10, Mac is a 10.10.5