Hello, I'm soon going on vacation and I'm planning to take an external hard drive, which contains my MacBook's Time Machine backup in it, but I won't take the MacBook itself with me. I will leave it back home so my brother (and business partner) can use it. For the next couple of months I will be staying with a friend who has a spare MacBook and offered me to use it. I need some guidance on how I can set an entirely separate partition on my friend's MacBook, then install my Time Machine backup from my hard drive in it and then, when it's time for me to return home, I want to know the steps I need to follow to remove it from my friend's MacBook, so I can basically return their MacBook the exact way I got it. Please, note that, I do not wish to make a separate account on their already existing partition, in case you're thinking of suggesting that, as (I imagine) might be quicker, but it's not an actual solution for me. Also, a possibly silly question: will my brother be able to use our MacBook back home, while I use my friend's MacBook after I set it up with my Time Machine's backup as desribed above? Or is it that only one of us will be able to use it at a time? If we actually can't, would it make any difference, if only one of us is connected on the internet, at a time? By the way, my friend's MacBook runs '10.6 Snow Leopard' and my Time Machine's backup is '10.7 Lion' but since I'm setting an entirely separate partition, I guess that doesn't make any difference, does it? Both MacBooks are 4,1 so we know for fact that my friend's MacBook can also run '10.7 Lion'. Please correct me if I'm wrong. Thank you in-advance for your help, guys.