Hi MacRumors, I've read the Apple support article regarding Migration Assistant but I am left with a few questions. The majority of that article is geared towards purchasing a new Mac and migrating the data from an existing Mac onto it. I'm in a different situation where I am trying to migrate data onto an older computer, and one that doesn't support any sort of internet recovery or the like. What I want to do is migrate my entire Yosemite 10.10.3 installation from my desktop along with all of its data onto my notebook that is running 10.6.8 Snow Leopard. The method for migration that I will be using is an external USB HDD that has an updated Time Machine backup of the desktop's Yosemite installation. I want this to be clean as possible, so my first question is, is it even possible that I can "apply" that backup to my notebook running Snow Leopard via Migration Assistant? Or would I have to upgrade to Yosemite first? I also was wondering if it is possible that I can partition the internal drive in my notebook (that currently just has the Snow Leopard installation), and allow this application of data from the desktop to be on its own, separate partition? I want to use this method as a way of a clean installation onto my notebook in other words, and I will delete the existing Snow Leopard partition afterwards just to have my entire drive available again with only the migrated Yosemite data. Thoughts?