I'm curious about the installation procedure used when you Dual Boot two versions of OS X.
From what I understand, when you install a fresh OS X system the installer copies all the required files across (from the installation DVD in this case) to the filesystem, and then "does some stuff " to make the installation bootable and appear on the boot screen when you hold down the Option key. What exactly (in all the lovely/gory UNIX/Darwin detail) is this "stuff "?
My situation is this: I have two fully working OS X installations on two laptops. I would like to transfer the 2nd installation across to the 1st laptop and dual boot the two installations on that first laptop instead. I therefore figure I could copy (
dd?) across everything from
/ on the 2nd installation into a new HFS+ partition on the 1st laptop. Then somehow I ask the system to make that partition bootable so it will show up in the boot menu. How can I do this?
I appreciate there are two questions there but I assume (perhaps incorrectly) that they ultimately have the same answer. I have also read this SU question, but I want to do the entire process by hand, not with a 3rd party tool - more for education than utility.