资料介绍
The FAT (File Allocation Table) file system has its origins in the late 1970s and early1980s
and was the file system supported by the Microsoft® MS-DOS® operating system. It was
originally developed as a simple file system suitable for floppy disk drives less than 500K in
size. Over time it has been enhanced to support larger and larger media. Currently there are
three FAT file system types: FAT12, FAT16 and FAT32. The basic difference in these FAT
sub types, and the reason for the names, is the size, in bits, of the entries in the actual FAT
structure on the disk. There are 12 bits in a FAT12 FAT entry, 16 bits in a FAT16 FAT entry
and 32 bits in a FAT32 FAT entry.
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