One of the first disk partitioning programs was MS-DOS's Fixed Disk utility (FDISK). This program, which still ships with Windows 9x, has changed remarkably little in recent years. MS-DOS's FDISK is a text-mode program with a simple but somewhat awkward user interface. It suffers from limitations in a multi-OS environment but can still be quite useful for creating a basic partition setup.
MS-DOS's FDISK supports a command-line switch, /MBR, that rewrites the master boot record of a hard disk. This feature can be extremely useful if you want to remove an MBR-based boot loader such as System Commander or Linux's LILO.
▸ To learn more about the MBR, see The Handoff to the OS.