Original Amiga File System
E784394
Original Amiga File System is the early disk file system used by Commodore's Amiga computers, known for its simplicity and limitations in performance and reliability compared to later Amiga file systems.
Observed surface forms (1)
| Surface form | Occurrences |
|---|---|
| Amiga File System | 1 |
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
Amiga file system
ⓘ
file system ⓘ |
| allocationMethod | bitmap-based free space tracking ⓘ |
| alsoKnownAs | OFS NERFINISHED ⓘ |
| backwardCompatibility | readable by later AmigaOS versions ⓘ |
| blockSize | 512 bytes ⓘ |
| characteristic |
flat bitmap-based allocation
ⓘ
limited performance ⓘ limited reliability ⓘ non-journaling ⓘ simple on-disk structure ⓘ |
| dataIntegrityFeature | checksums in header blocks ⓘ |
| designGoal | simplicity ⓘ |
| developer | Commodore NERFINISHED ⓘ |
| directoryEntryType | linked list of file header blocks ⓘ |
| directoryOrganization | hash-based directory structure ⓘ |
| doesNotSupport |
file permissions like Unix POSIX mode bits
ⓘ
journaling ⓘ long filenames beyond AmigaOS limits ⓘ |
| endianess | big-endian ⓘ |
| historicalRole | first standard file system for Amiga computers ⓘ |
| introducedIn | AmigaOS 1.0 NERFINISHED ⓘ |
| limitation |
inefficient on large hard disks
ⓘ
no journaling or transaction support ⓘ slow directory operations on large directories ⓘ susceptible to corruption on crashes ⓘ |
| maxFileSize | approximately 2 GB theoretical ⓘ |
| maxVolumeSize | approximately 256 MB ⓘ |
| metadataStorage | stored in file header blocks ⓘ |
| onDiskStructure |
bitmap blocks
ⓘ
data blocks ⓘ extension blocks ⓘ file header blocks ⓘ root block ⓘ |
| operatingSystem | AmigaOS NERFINISHED ⓘ |
| optimizedFor | floppy disk usage ⓘ |
| platform | Amiga NERFINISHED ⓘ |
| releaseDecade | 1980s ⓘ |
| replacedBy | Fast File System NERFINISHED ⓘ |
| status | obsolete ⓘ |
| stillUsableWith | Amiga emulators ⓘ |
| successor | Amiga Fast File System NERFINISHED ⓘ |
| supports |
Amiga protection bits
ⓘ
file comments ⓘ hierarchical directories ⓘ |
| typicalUse |
early Amiga application floppies
ⓘ
early Amiga system disks ⓘ |
| usedOn |
Amiga floppy disks
ⓘ
Amiga hard disks ⓘ |
| volumeIdentification | volume name in root block ⓘ |
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Amiga File System