FAT12

E708152

FAT12 is an early version of the File Allocation Table filesystem used primarily on floppy disks and very small storage devices.

All labels observed (2)

Label Occurrences
FAT12 canonical 10
FAT12 file system 1

How this entity was disambiguated

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
FAT32
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
PC DOS
linked to: MS-DOS

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

How these facts were elicited

Referenced by (11)

Full triples — surface form annotated when it differs from this entity's canonical label.

FAT table usedBy FAT12
subject linked to: FAT tables
BIOS Parameter Block usedIn FAT12 file system
linked to: FAT12
FAT hasVariant FAT12
Secure Digital fileSystem FAT12
SD memory card fileSystemSupport FAT12
subject linked to: SD memory cards
GEMDOS usesFileSystemType FAT12
ECMA-107 relatedTo FAT12
ISO/IEC 9293 standardizes FAT12