Since I have lost all my photos couple of times, I have finally smartened up and yesterday bought WD My Book 1T. There was no guide and I can not really find much on the internet on how to use it with my mac and time machine ( never used time machine before ). So I just plugged it in and it immediately connected with my time machine and took about an hour to copy all data. It seemed that it copied all data inc. all software applications, documents and even itunes library ( not the program - just songs ). I could not find my iPhoto library. So I just dragged it across to my book and now its there. I just don't really get the whole thing - how it works with my HD and with time machine - what gets updated automatically and what i have to drag across? Also - when i get new photos and music - does it automatically update or i have to drag it across and how i save it?? i know its a lot of Q - but i want to understand this asap to prevent losing more data. Thanks to anyone who can put any light on this for me or at least recommend a website or link.