I have two WD Elements 1.5TB drives. I am using one as my USB loader/running backup/storage device. The second is a backup duplicate of the first since I use the first with the Wii, movies, etc. I did an initial backup of everything to the second drive. Now, as I update my backup HDD, I am looking at methods of doing so. So far I am just dragging new data to each drive. I was looking at Norton Ghost. Since I am already backed up and the data is on the backup only drive, will I have to start over? I am formatted on both HDDs to FAT32. Do you think Norton Ghost is a good idea, and will be easy to implement? Will I have to erase the data and start over with the backup drive in order to make the Ghost software work?