I have a 250 GB external I've been using for Time Machine since late 2007. I happened to check it today and it was nearly full~so I'm in that process of deleting some of the older data (that process is taking forever). I would like to partition this external and use some space for iPhoto since my main HD is getting full. Is this a fool's mission? I can understand if I started from scratch but with a nearly full one is it possible? I do have backup off site (Carbonite)~~maybe it would be easier to erase the external and start fresh? Thank you for your help.