Details: File format summary

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Summary
Name	Macintosh File System
Version
Other names
Identifiers	PUID: fmt/2068
Family
Classification	Aggregate
Disclosure
Description	Macintosh File System is the original Macintosh file system created for use on single sided 400K floppy disks and MacOS system 6 and before. It was released in January 1984 and effectively discontinued in September 1985 with the introduction of Hierarchical File System (fmt/1105).
Orientation
Byte order
Related file formats	Is previous version of Hierarchical File System
Technical Environment
Released
Supported until
Format Risk
Developed by	Apple Computer, Inc.
Supported by	None.
Source	Brigham Young University / Brigham Young University
Source date	21 Jul 2025
Source description	v.121: new PUID.
Last updated	21 Jul 2025
Note	https://wiki.osdev.org/MFS