Comment 15 for bug 154506

Catto,

The user can also install software (packages), and many users don't understand the difference between a LiveCD and a hard-drive install (nor should they have to).

I very much like Mat's suggestion, "Install Ubuntu on this computer": it assumes no level of technical knowledge and leaves no ambiguity as to what launching that process will do. Absolute newbies may not understand the word "install", but those users are very likely to have help from somebody with at least a small amount of experience who will recognize that verb.