How do I increase the size of my system disk? I very cleverly decided that I would split my HDD (1TB) into two partitions, first one ~320GB for the system, the rest for all my other stuff. Now, I'm fast running out of space on the system partition, yet there is still plenty of space left on the second partition, so I want to rebalance the size of both. Except when I go into disk utility I can play around with the size of the second partition, but the first (system) partition is locked. Is there any way around this?