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Contents. File Allocation Table. File Allocation Table (FAT) is a file system developed for personal computers and was the default filesystem for MS-DOS and Windows 9x operating systems. [citation needed] Originally developed in 1977 for use on floppy disks, it was adapted for use on hard disks and other devices.
exFAT (Extensible File Allocation Table) is a file system introduced by Microsoft in 2006 and optimized for flash memory such as USB flash drives and SD cards. [6] exFAT was proprietary until 28 August 2019, when Microsoft published its specification. [7] Microsoft owns patents on several elements of its design.
Rufus was originally designed [4] as a modern open source replacement for the HP USB Disk Storage Format Tool for Windows, [5] which was primarily used to create DOS bootable USB flash drives. The first official release of Rufus, version 1.0.3 (earlier versions were internal/alpha only [6]), was released on December 04, 2011, with originally ...
The Transaction-Safe FAT File System (TFAT) of the TFAT12, TFAT16 and TFAT32 file systems is a driver layer modification to the original FAT file systems FAT12, FAT16 and FAT32 maintaining two copies (FAT 0 and FAT 1) of the file allocation table instead of two identical ones. While performing a drive operation, changes would be made to FAT 1.
Formatting tools or non-DR SYS-type tools may clear these bits, but other disk tools should leave bits 15-8 unchanged. 0x02A 0x1F 2 Version (defined as 0.0). The high byte of the version number is stored at offset 0x02B, and the low byte at offset 0x02A. [4] FAT32 implementations should refuse to mount volumes with version numbers unknown by them.
All of the Linux filesystem drivers support all three FAT types, namely FAT12, FAT16 and FAT32.Where they differ is in the provision of support for long filenames, beyond the 8.3 filename structure of the original FAT filesystem format, and in the provision of Unix file semantics that do not exist as standard in the FAT filesystem format such as file permissions. [1]
For example, the FAT32 file system does not support files larger than 4 GiB−1 (with older applications even only 2 GiB−1); the variant FAT32+ does support larger files (up to 256 GiB−1), but (so far) is only supported in some versions of DR-DOS, [2] [3] so users of Microsoft Windows have to use NTFS or exFAT instead.
VFAT, a variant of FAT with an extended directory format, was introduced in Windows 95 and Windows NT 3.5. It allowed mixed-case Unicode long filenames (LFNs) in addition to classic 8.3 names by using multiple 32-byte directory entry records for long filenames (in such a way that old 8.3 system software will only recognize one as the valid directory entry).