I have a Time Machine backup but, as I understand it, it backs up everything. I wish to do a reformat to get rid of a lot of useless clutter I have, a lot of which I'm not even sure where it has been installed to!
This includes MacPorts where, when I try the uninstall everything command, the computer just hangs.
Do I need to find my Snow Leopard disk in order to reformat and install Lion?
Is it easy to just pull out my data, such as from iTunes, Aperture and my documents folder from my Time Machine?