A while ago I partitioned my 300GB external HD into two parts. One FAT32 for general backups for my Macbook and Window Laptops and another to make a bootable image so I can backup my Macbook using SuperDuper. Now I'm probably going to get a 120GB for backing up my Macbook and no longer need the space taken up on my first external, so I want to merge them back together. Is there a way I can do this using Disk Utility (or another program) without having to format the HD? As I don't have anywhere to put the data I have on it at the moment.