Is it possible to expand the size of the HFS partition OS X is installed on? One of my macs has some unused space on the drive from a recently deleted partition, and I'd like to expand the OS X boot partition to fill it. Every partition editor I've tried (gparted, ipartition, disk utility) can't resize HFS partitions with an MBR. Are there any applications that can do this, or do I just have wipe the drive and repartition it?