HFS
Unknownfilesystem
Hierarchical File System (HFS) is a file system developed by Apple primarily for Mac OS. Within HFS a storage volume is divided into logical blocks of 512 bytes. The Hierarchical File System groups these logical blocks into allocation blocks, which can contain one or more logical blocks, depending on the total size of the volume.
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| Extensions | .hfs.img |
|---|---|
| Signatures | 4244 at byte 1024 (HFS) |
| PRONOM | fmt/1105 |
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From Just Solve the File Format Problem (File Formats Wiki), PRONOM. Updated 2026-10-24.