I use a Fantom 80GB external drive on which I've loaded a bootable backup of my hard drive. It works great and I'm happy to have it. But I'm not even beginning to use up all 80GB capacity, can't I enter more data on this drive without disturbing my bootable backup? I've been led to believe that anything I add will copy over what's already on the drive. I can't get definitive information at the Fantom web site. I'm sure one of our forum guys will be competent to answer my question. Right?