Hi. I ran into a problem recently where the finder says my hard drive is smaller than it actually is. I have a 1TB drive but it said I only have 500GB with about 100GB left. I am in the middle of going to fix it and right now I am on my external installation of Mac OS X . I have everything backed up but the partition on Disk Utility is the problem, not the disk. How can I reformat the entire disk including the partion? I tried to get the partition to go to the entire disk but it isn't working. Please help ASAP.