Just got a new 1TB external network hard drive to try and solve my storage and sharing problems. It works no bother out of the box pre-formatted as MS-DOS, but due to the limit of this format and because I heavily use iMovie I want to use Mac OS Extended (journaled). When I try to do a quick erase I get the error message Will give it a full erase fix it? This will take 12-14 hours to do so want to know if I'm going down the right path before I waste a night. Cheers!