I'm going to install a 120gb SSD in my 27" iMac core i7. Currently I have a 2TB Hitatchi drive installed. I would like to install OSX as well as all my apps on the SSD and then keep all my user files on the 2TB drive. I'm trying to figure out the best way to get this set up once I install the SSD. Right now I have all data, apps and OSX on the 2TB drive. Here's what I'd like to do. Once I install my SSD I'm going to do a fresh install of OSX and my apps. Then I'd like to remove OSX and apps from my 2TB drive and only keep my user files on it. My questions are ... 1. What's the best way to remove OSX from my 2TB drive? Do I have to erase the disc and then load all my user files once its been erased. 2. Also, is it ok if I keep OSX and all my apps on the 2B drive as well as my user files but still boot from the SSD? I would only be accessing my user files on the 2TB drive but wonder if I can still keep the OS and apps installed at the same time. Assuming I could but it would kind of be a waste of space, right? 3. Once I get both SSD and 2TB drive set up how I want them, I need to regularly back both of them up using CCC. I have a 3TB external drive that I backup to. Will I need to create 2 partitions on it, one for the SSD and one for the 2TB? I would like the SSD partition to be bootable incase the drive ever fails I wont miss a beat. I'm assuming to back both of them up I would need to create separate partitions on my external drive, one for the SSD and one for the 2TB. Any help/answers are appreciated, let me know if my knowledge is incorrect. Thanks!