I created a partition of 6 gb on my second harddrive, made it ext 4, and 200mb for swap, though I don't really know what swap is for. Then I installed trisquel on it. When I start the computer, I don't get an option to boot trisquel. I couldn't find the second harddrive in the bootlist so I exchanged them and tried to boot again. Then I got a message that said "BOOT-something MISSING" and ctrl-alt-delete to restart. What's going on?