Parted Magic is a small live CD/USB/PXE with its elemental purpose being to partition hard drives. Although GParted and Parted are the main programs, the CD/USB also offers other applications, such as Partition Image, TestDisk, fdisk, sfdisk, dd, ddrescue, etc.
http://partedmagic.com/
http://distrowatch.com/table.php?distribution=partedmagic