Now...I'm a good boy, and back up all my original pictures to CD/DVD before I even look at them, also keeping copies on my H/D. But I seem to be filling up my drive at 750mb to over 1gb per days shooting at an airshow. My drive is in 3 partitions, C BOOT, D BACKUP, and E RECOVER. I currently only ever use C, which has 59gig free, 40gig used. Can I use the free space on D for files/pictures (1.25gig used and 86gig free), or is this part of the drive best left alone? As I understood, D and E are for system recovery (which I have had to use once) to restore the machine to 'out of the box' condition, but I'm unsure if the 'restore' needs the 86gig on D to be left free. Alternativly, anyone use one of the widely available USB external hard drives....are they as quick as an internal, or should I just install a secondary internal one?