FAT16
Noun
Meaning
(computing) The version of the FAT series of file systems which uses a 16-bit file allocation table.
(very strictly) The original version of this file system, storing both the number of (real or virtual) disk sectors and the number of sector clusters in a volume as 16-bit integers.
(often) FAT16B, the version of this file system storing the number of clusters in a volume as a 16-bit integer but using a 32-bit integer to represent the total number of sectors in a volume, allowing for larger volume and file sizes.
Source: en.wiktionary.orgExamples
A 20 MiB hard disk formatted under MS-DOS 3.0 was not accessible by the older MS-DOS 2.0 because MS-DOS 2.0 did not support version 3.0's FAT16.
For example, DR-DOS boot sectors are able to locate the boot file in the FAT12, FAT16 and FAT32 file system, and load it into memory as a whole via CHS or LBA, even if the file is not stored in a fixed location and in consecutive sectors.
Nomenclature Technically, the term "FAT file system" refers to all three major variants of the file system, FAT12, FAT16 and FAT32, and most parties clearly distinguish between them where necessary.
Support for FAT32+ and FAT16+ is limited to some versions of DR-DOS and not available in mainstream operating systems. citation (This extension is critically incompatible with the /EAS option of the FAT32.
SF " in the root directory of the FAT12 or FAT16 volume.
The FAT16 and FAT32 file systems have made use of a number of partition type codes due to the limits of various DOS and Windows OS versions.