So I decided I would like to move my backup drive to my airport extreme. I used to backup my mac via FW-800 connected directly to my mac, but I would now like wireless backups so I can access all my files from anywhere. When I moved the drive and connected it to my AE via usb, I can see it and mount the drives. However, now time machine seems to not recognize my previous backups. Because my time machine partition is only 500gb, when I tried to backup my mac, it told me that there was not enough space on my drive to do a backup. Time machine was trying to backup my ENTIRE mac, rather than just recent changes. Anyone know how I can fix this problem?