The wording of the title may throw you off so allow me to explain: My SSD should be arriving soon. As such, I've been thinking about what I should do with the original disk. I'm tempted to just leave the Mountain Lion OS on there as a kind of back-up and just install the ML from a USB straight to the SSD (rather than Ghost or whatever else). Should I put the disk into an enclosure, or swap out the ODD to make room for it, the fact that the disk isn't encrypted means I can just 'see' the files, correct? My Macs have always been very stable and therefore I have never needed to access the OS drives in this way before. I could do with researching Mac security a little more, but I imagine it'll work like a Windows/Linux OS and allow me to see all files? Assuming the drive is in the ODD bay, will I need extra software to pick which OS/Drive to boot? What is the default behaviour?