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Free Partition Managers

Partition Logic
Partition Logic is a free hard disk partitioning and data management tool. It can create, delete, erase, format, defragment, resize, copy, and move partitions and modify their attributes. It can copy entire hard disks from one to another

Ranish Partition Manager
This is a hard disk partitioning tool that is intended to give users high level of control for running multiple operating systems, such as Linux, Windows, FreeDOS, and FreeBSD on a single disk. Partition Manager can create, copy, and resize primary and extended partitions. It includes a simulation mode that so you can experiment before working on the real hard drive partition tables.

TestDisk
TestDisk is a tool to check and undelete partitions. It is available for various operations. Please see the website for more details.

Cute Partition Manager
supports all versions of Windows (9x,ME,NT,2K,XP,Vista), DOS, Linux, etc.