Corrigendum 1 - Information processing - Data interchange on 90 mm (3.5 in) flexible disk cartridges using modified frequency modulation recording at 7 958 ftprad on 80 tracks on each side - Part 1: Dimensional, physical and magnetic characteristics

This document serves as a formal correction to an established technical specification concerning data storage media. It addresses the precise requirements for exchanging data on 90 millimeter flexible disk cartridges utilizing modified frequency modulation recording techniques. The content specifically focuses on the physical dimensions, mechanical characteristics, and magnetic properties necessary to ensure compatibility and reliability across different systems. The information provided details the geometric layout, including the track count and recording parameters per side, which are critical for consistent operation. By outlining these specific attributes, the document clarifies earlier definitions and ensures uniformity in manufacturing and usage practices for this class of storage devices. It functions as an essential reference for engineers and manufacturers to align their products with the corrected technical standards, facilitating seamless interoperability within the information processing environment.