so i have got a 750GB external harddrive(wired), and partitioned it to 300GB for time machine. At that time i didn't realise how important time machine could be so i only gave it 300GB, but now i am needing more space to it. So i have decided to use that entire external harddrive(750Gb) for time machine backup.. Is there anywhere i can maintain the previous time machine backups and combine the remaining 450GB of space into the first partition(time machine partition)? thank you very much for any help, very much appreciated. quickly, if i just delete partition 2(450GB), can i merge it with the partition 1?