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Because file size references are stored in eight instead of four bytes, the file size limit has increased to 16 exabytes (EB) (2 64 − 1 bytes, or about 10 19 bytes, which is otherwise limited by a maximum volume size of 128 PB, [nb 2] or 2 57 − 1 bytes), raised from 4 GB (2 32 − 1 bytes) in a standard FAT32 file system. [1]
There are several variants of the FAT file system (e.g. FAT12, FAT16 and FAT32). FAT16 refers to both the original group of FAT file systems with 16-bit wide cluster entries and also to later variants. "VFAT" is an optional extension for long file names, which can work on top of any FAT file system. Volumes using VFAT long-filenames can be read ...
FAT32 supports files up to 4 GB. FAT32 is the factory format of larger USB drives and all SDHC cards that are 4 GB or larger. exFAT supports files up to 127 PB. exFAT is the factory format of all SDXC cards, but is incompatible with most flavors of UNIX due to licensing problems. NTFS supports files up to 16 TB.
Microsoft and IBM operating systems determine the type of FAT file system used on a volume solely by the number of clusters, not by the used BPB format or the indicated file system type, that is, it is technically possible to use a "FAT32 EBPB" also for FAT12 and FAT16 volumes as well as a DOS 4.0 EBPB for small FAT32 volumes.
Version 6 Unix file system (V6FS) Bell Labs: 1972 Version 6 Unix: RT-11 file system DEC: 1973 RT-11: Disk Operating System GEC: 1973 Core Operating System CP/M file system: Digital Research (Gary Kildall) 1974 CP/M [1] [2] ODS-1: DEC: 1975 RSX-11: GEC DOS filing system extended GEC: 1977 OS4000: FAT (8-bit) Microsoft (Marc McDonald) for NCR: 1977
A clash between BlackRock and the FDIC over the money manager’s holdings of US banks will play out in the waning days of President Joe Biden’s administration.
The change to 64-bit file sizes frequently required incompatible changes to file system layout, which meant that large-file support sometimes necessitated a file system change. 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 ...
New year, new you? Discover the top New Year’s resolutions for pet owners in 2025 and beyond