DR Elmore, I don’t know anything about the LaCie drives except that they’re the brand Apple likes to push. I’ve been using - oh, what in the HELL are they? - I think a couple are Seagate and a larger one is Western Digital. And as it happens, I have to call Apple about the latter because - GUESS WHAT HAPPENED? - the MacBook isn’t reading it. It’s the one I want to use as a new backup drive.