I currently have around 180GB data on my iMac and I'm getting a new one next week. I have a time machine back up for my current iMac but I was wondering is there an easy option to migrate the data completely to the new iMac? I have two scenarios here 1. I may give my current iMac to my bud before transferring to my new iMac in which case does the Time Machine back up still work for my new iMac or should I create some sort additional back up. 2. I may have the old and new iMac with me depending on the shipping times, in which case I can take the boot with "T" option? If so how do I connect them? ethernet? wireless?