Hello guys, could you please help me out with this? I have a rMBP which I want to backup and I have a 2TB (and another 1TB) drive with already some backup from MP. When I got the rMBP I simply backed up my MP and then on rMBP I restored from that backup. I always have 2 back ups so when I tried to backup my rMBP with the 1TB drive I thought it would just add to the backup that is already there but instead the old backup of the MP got deleted and then I got fresh backup. It was ok as I still have the 2TB so I thought no big deal. Unfortunately now, the 1TB is in another location (another country) and I need to backup my rMBP with the 2TB drive without losing the original backup that is there from the MP. I'm afraid that it will again delete the existing backup. Is there a way to prevent it? Shall I just rename the backup folder or something? Or do I match the harddrives names so the backup is added rather than erase/replace? What is the correct way, please?