My Macbook is full and I purchased a WD Passport so that I can clear out space on my Macbook hard drive. I don't necessarily need a back up of my ENTIRE system, I don't believe. I just really need to make sure that pictures, music and documents are always saved and secure. I want to have access to all the contents that would be moved to the Passport, especially my photos, in order to edit, save or share with other people. I will not be keeping the external plugged in at all times so wanted to know, 1) Is Time Machine really for me? 2) If I did use Time Machine, since it seems like an efficient way to save your files, would I be able to go into my files and manipulate them and use them FROM the Passport? 3) If I used Time Machine and had to access a file on the Passport, can I plug it in to any computer, Mac or PC, and do so? 4) I read somewhere about partitioning and allotting a portion of the Passport space for Time Machine backups and the other partition for the dragging and dropping and accessing my files...Is this smart? ANy help is appreciated, thanks!!