File allocation table (FAT) file system, basic operating systems dos and windows. File system file allocation table (FAT) is simple designed, and for this reason, it is a format for floppy disks (disk software). moreover, this extension is true by all operating systems specific to the IBM/PC can support. and that reason often have to share information between different operating systems on one computer boot are that is used can be (Drake environment, multi-). Also in the piece of memory, hard-mode (Solid-state memory) and other devices of similar used.

FAT in terms of design, comes into view, and designers, it seems, no detailed information is available from the design of a file system right not have been, and therefore has major drawbacks. The first objection, it simply layered files that allow piece-piece of (Fragmentation) it's easy, that leads to the Kennedy operation in the operating system used. The second objection to the ... FAT to support the problems of the system design evolved. The third objection is that the completed Main it allow the use of file names longer than 11 characters and do not (8 characters for file name and 3 characters for the extension it), as well as the changes that are on the system by Microsoft, done, but in a system called VFAT, implement, effortless this will allow can be 255 characters and more as file name. Finally, the fourth objection to this is that this cluster (Cluster) the vast amount of used space because of the multiplicity of files with low capacity goes to waste.

however, because the IBM Design has MS-DOS as the operating system selected on the PC, etc., and that MS-DOS uses the FAT, the file system is widely in significant use. Due to the basic design it, implement the instructions, the file system simply possible. as well as because of the extensiveness of, example, Windows and DOS., the FAT in some cases become governor to exchange information.