hey guys, I want to use time machine, because the macbook from a close friends died (coffee + macbook = not good), and he lost his HDD, it´s just dead. I´m using my macbook like 95% at home, but if I use my macbook somewhere else and work, or something like that, do I just need to plug in my 500gb external hdd and time machine copys the new files and all is just fine? And is it ok for time machine to plug in the external hdd just every 2-3 days? The additional cable is maybe annoying, I don´t want to save every second from my macbook, I just want to save 99%, so in case of an accident I just loose 1 day data or something like that. So my main question is: Can I plug in/out my external storage at every time I want to and time machine starts copying everything since the last plug in or is this a problem for my macbook? Greetings.