Basically I have a partition on my hard drive called "Macintosh HD" which is 46 GB (with 30 GB used and 16 GB free). I then have unallocated free space which is taking up 27 GB. Is there a way I can increase the size of my Macintosh HD partition to take up all of the free space? Would this be a solution to the problem?: I have a backup of my Macintosh HD, which is on an external hard drive. Would there be a way to completely erase my whole hard disk (including both partitions) and then restore it from my backup? I'm basically just trying to add the free space on my hard disk to the mac partition, essentially creating 1 partition.