My drive using 10.6.6 is going pretty slow, so I've decided to get with the times and upgrade/ update to Mountain Lion. I wanna ensure I still have all my applications installed, as well as movies and music and such... If I install it, will it create a new partition and then migrate all my "stuff" to that new partition? I know I should have a backup, and I'm working on that... but I just wanna know how to go about my goal in the best way possible All help is super appreciated!!