So I have a 16GB SD card in my Samsung S5. And I was copying some files over and the copying stopped, saying I don't have enough storage. The phone says I still have 10GB left on the card. I took the micro sd card out and put it in a USB card reader and placed in the PC. The PC said I had 10GB but I couldn't copy any files to it from the PC to the card reader, saying there isn't enough storage.
What could be blocking me from using that 10GB on the card??
Info:
Samsung S5
Android 6.0.1 (Marshmallow)
My Micro SD card: 16GB (looks exactly like the one of the left, but without the word "Toshiba". There is no vendor name on mine. But it was shipped with my S5)
Card Reader I used: