I've ordered a new 27" iMac 5k to replace my 2007 iMac. I'll be transferring all my files to the new Mac and want to make sure I don't mess up. When I turn on the 2007 iMac it doesn't recognise the hard drive. I'll try to fix that but I do have a Time Machine backup. If I restore from the backup, will it take me back to Snow Leopard, or does it just copy the user profile and content? If the latter, do the files get moved to the same location, or does OS X put them somewhere else? Finally, my iTunes library has the old file structure where it doesn't separate podcasts and other media from the music. I want to ensure that my podcasts library transfers properly, with the notes and the subscriptions remaining live. (Several years ago I tried to transfer some podcasts to my MacBook and the notes weren't present and subscribing began a new download stream).