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Data interchange on 130 mm flexible disk cartridges using MFM recording at 7 958 ftprad on 80 tracks on each side

2nd edition, June 1986

This Standard ECMA-78 specifies the mechanical, physical and magnetic characteristics of a 130 mm magnetic flexible disk cartridge recorded at 7958 ftprad on 80 tracks on each side to provide physical interchangeability between data processing systems. It also specifies the quality of the recorded signals, the track layout and two track formats.

Full data interchange between data processing systems is provided by either:

  • Track Format No 1 together with the labeling system specified in Standard ECMA-91, or
  • Track Format No 2 together with the volume and file structure specified in Standard ECMA-107.
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Technical CommitteeTC19 (this TC is no longer active)


  • ECMA-78, 1st edition, September 1982Download