This disk cannot be partitioned becuase verification failed.
Use Disk Utility to repair this disk.
So that's the error message that comes up when I try o partition. How do I fix it in the Disk Utility?
This disk cannot be partitioned becuase verification failed.
Use Disk Utility to repair this disk.
You missed telling me about a step. One way to repair the booting system hard drive, is to boot to the install/restore DVD, and run the Disk Utility from the Utilities menu.
You can't repair the boot drive with Disk Utility on the same disk while you are booted to that disk. How did you run the Repair Disk (and NOT Repair Disk Permissions)? The Repair Disk button would be greyed out, if you are booted to that same disk.
Is this the same 20-inch iMac that you were having Boot Camp problems with a few months ago?
Can you give some details about the problems that you are having now?