ORage> (MFM, Modified FM, OR sometimes "Multiple Frequency Modulation") A modification to the ORiginal frequency modulation scheme fOR encoding data on {magnetic disks}. MFM allows mORe than 1 symbol per flux transition (up to 3), giving greater density of data. It is used with a data rate of between 250-500 kbit/s on industry standard 3.5" and 5.25" low and high density diskettes, and up to 5 Mbit/s on ST-506hard disks. Except fOR 1.44 MB floppy disks, this encoding is obsolete. Other data encoding schemes include GCR, FM, RLL. See also: PRML. (2002-06-24)