Partition Magic - Partition Manager Software
Cylinder-head-sector, also known as CHS, was an early method for giving addresses to each physical block of data on a hard disk drive. In the case of floppy drives, for which the same diskette medium can be low-level formatted to different capacities, this is still true. Although CHS values no longer have a direct physical relationship to the data stored on disks, pseudo CHS values (which can be translated by disk electronics or software) are still being used by many utility programs.
Getting Started
Using MiniTool Partition Wizard