I'm not a hardware guy so this is probably a silly question. I'm intending on replacing the DIY fusion drive in my mini with dual SSDs. A long time ago, in an OS far, far away, I vaguely remember something about C drives and D drives. How does mac handle multi drives? Would it still be treated as a single volume like the fusion drive or would the second drive appear as a separate device in finder like a usb drive? Would I have to manually 'move' things over or would the OS automagically sort things for me?