FAT12
E708152
FAT12 is an early version of the File Allocation Table filesystem used primarily on floppy disks and very small storage devices.
Observed surface forms (1)
| Surface form | Occurrences |
|---|---|
| FAT12 file system | 1 |
Statements (54)
| Predicate | Object |
|---|---|
| instanceOf |
FAT file system variant
ⓘ
disk file system ⓘ file system ⓘ |
| clusterEntrySizeBits | 12 ⓘ |
| compatibleWith | most BIOS boot loaders for PCs ⓘ |
| designedFor |
floppy disks
ⓘ
small-capacity storage devices ⓘ |
| directoryEntrySizeBytes | 32 ⓘ |
| fileSystemFamily | FAT ⓘ |
| firstTwoFATEntriesReserved | true ⓘ |
| hasBootSectorField |
OEM name
ⓘ
bytes per sector ⓘ hidden sectors ⓘ media descriptor ⓘ number of FATs ⓘ number of heads ⓘ root directory entries ⓘ sectors per FAT ⓘ sectors per cluster ⓘ sectors per track ⓘ total sectors ⓘ |
| introduced | early 1980s ⓘ |
| limitation |
inefficient for larger disks
ⓘ
small maximum volume size ⓘ |
| longFilenamesViaVFAT | possible ⓘ |
| maximumNumberOfClusters | 4096 ⓘ |
| numberOfBitsPerClusterEntry | 12 ⓘ |
| optimizedFor | small volumes with low cluster counts ⓘ |
| storesFATIn | reserved area after boot sector ⓘ |
| successor |
FAT16
NERFINISHED
ⓘ
FAT32 NERFINISHED ⓘ |
| supports | contiguous and fragmented file allocation ⓘ |
| supports8.3Filenames | true ⓘ |
| supportsBootSector | true ⓘ |
| supportsDataRegion | true ⓘ |
| supportsFileAttributes |
archive
ⓘ
directory ⓘ hidden ⓘ read-only ⓘ system ⓘ volume label ⓘ |
| supportsLongFilenames | false (originally) ⓘ |
| supportsRootDirectoryRegion | true ⓘ |
| supportsSubdirectories | true ⓘ |
| typicallyHasNumberOfFATs | 2 ⓘ |
| typicalMaximumVolumeSize | up to 16 MB ⓘ |
| usedBy |
MS-DOS
NERFINISHED
ⓘ
PC DOS NERFINISHED ⓘ early versions of Windows ⓘ |
| usedOn |
3.5-inch floppy disks
ⓘ
5.25-inch floppy disks ⓘ 8-inch floppy disks ⓘ RAM disks ⓘ |
| usesAllocationTableType | File Allocation Table NERFINISHED ⓘ |
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
FAT table
this entity surface form:
FAT12 file system