I just bought a Samsung M3 external portable hard drive to store photos etc from my Macbook pro 13 inch 2013 model. I am terrible with technology in general (it seems to hate me), and what I was promised would be simple has turned into a three hour long ordeal. First I tried to copy my iPhoto library onto the hard drive, following instructions on another forum. But it would not let me click and drop, or paste in the file. Then somehow I accidentally dragged the samsung hard drive from "devices" in "finder" and its completely disappeared. I can't access it or eject it, or even find it in spotlight even though I know it is still connected. I have tried taking it out and putting it in again. Does anyone know where I am going wrong?