Apple Partition Map

Unknown

filesystem

Apple Partition Map Disk Image is specific to describing the contents and structure of Apple Partition Map (APM) partition scheme, it can be thought of as a container format for multiple filesystem image files. It was developed by Apple in around 1988 with the introduction of Apple Partition Map scheme on Macintosh II, a scheme that defines how the data is organized on a singular disk. A disk image is a uncompressed copy of the contents of a disk or a folder, it can facilitate certain types of backup and recovery strategies. Please see ID: fdd000348 from Library of Congress and other links attached to this entry for further information.

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Extensions.iso.dmg.cdr.toast.bin.img
Signatures
4552 at byte 0 (File Formats Wiki)
PRONOMfmt/1740
WikidataQ113866096

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Documentation

Sources

From Just Solve the File Format Problem (File Formats Wiki), PRONOM, Wikidata. Updated 2026-10-24.

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