fdformat

Fdformat is the name of two unrelated programs:

  • A command-line tool for Linux that "low-level formats" a floppy disk.
  • A DOS tool written in Pascal by Christoph H. Hochstätter that allows users to format floppy disks to a higher than usual density, enabling the user to store up to 300 kilobytes more data on a normal high density 3.5" floppy disk. It also increases the speed of diskette I/O on these specially formatted disks using a technique called "Sector Sliding". In this technique, the physical sectors on the disk are ordered in such a way that when the drive advances to the next track, the next logical sector waiting to be read is immediately available to the read head.

See also
  • 2M, a similar program that offers even higher capacity
  • DMF, a high-density diskette format used by Microsoft
  • XDF, a high-density diskette format used by IBM
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