Ok heres the skinny. On my imac i have an ex. hdd that i use for Time Machine. Im selling my imac so im going to use that hdd on my Macbook Pro. I dont want to keep none of the files on it except my Pro Tools folder. and maybe my music folder i dont know. Now here are my questions. 1. how do i delete everything off of an external hdd but only keep certain files. 2. is it even possible to hook a hdd up to mac without using time machine. thanks in advance.