what's "2" supposed to do? why do i have different phases for mounting the root filesystem AND the external device?
if you don't read the code or some form of documentation that's obscure as hell
instead, you can understand "format" rather easily, and the order of operations is just logic, how could i "copy" befoure "mount" ?
for the really hard ones there is (better, is going to be) -h and some documentation!
that said, everyone is free to use whatever he likes

PS: the main goal of the script is, anyway, to make a cleaner script that can handle any device, and that it's easily readable by anyone who has spent more than 5 minutes in a posix shell; for the `just copy` thing there's already nupgrade.sh (and just now i saw console-tools that should make everything easier)