Hey, I have a Mybook 1140 that I was using on my macbook for a few years now. I am photographer and have a lot of priceless photos on here that can not be lost. I just got a PC and when I plug my mybook in its not even registering. When using my macbook it was just automatically pop up on my desktop. Do i need to download WD software to my PC to register the external hard drive? What am I missing?