ISO/IEC 9529 (''Information processing systems — Data interchange on 90 mm (3,5 in) flexible disk cartridges using modified frequency modulation recording at 15 916 ftprad, on 80 tracks on each side'') is a standard published by the

International Organization for Standardization The International Organization for Standardization (ISO ) is an international standard development organization composed of representatives from the national standards organizations of member countries. Membership requirements are given in Art ...

which defines the data format used on 3.5 inch floppy disks. It is also known a
ECMA-125
The standard consists of two parts: * ISO/IEC 9529-1:1989: ''Part 1: Dimensional, physical and magnetic characteristics'' * ISO/IEC 9529-2:1989: ''Part 2: Track format''

External links

International Organization for Standardization

#09529 {{standard-stub