File Allocation Table (FAT):
A Table or list maintained by some Operating
Systems (O/S) to keep track of the status of various segments of disk
space used for file storage. In other words, the FAT (File Allocation
Table) is a System for keeping track of how files are stored on a
Disk Defragmentation is
essential for proper System Maintenance & Performance. Even NTFS
Partitions whether Workstations or Servers benefit from Defragmentation.
Windows Operating System FAT - File
The File System used by MS-DOS and adapted for
Windows to store information on Disks, which makes use of a File
Allocation Table. There are three types of FAT
File Systems. The FAT12 (12-bit) is used on FAT volumes
smaller than 16 megabytes in size, such as Floppy
Disks. FAT16 can be found on all versions of Windows - Win2000,
WinMe, Win98, and the later Win95 OEM SR2 also
support FAT32; Windows NT does not.
Although Win2000 does support FAT32, it does not
create FAT32 Partitions upon installation of Win2000 OEM. Win2000 will
create FAT32 Partitions from the Control Panel - Administrative Tools,
Computer Management, Disk Management. This
is also the place for configuration (Fdisk & Format) of additional
Disk Drive Storage for Operational use.
- FAT12 - Floppies
- FAT16 - DOS
& Win3x days plus lower capacity Storage Media Devices.
- NTFS - NT,
Win2000 & NTFS5 - WinXP flavors
- Windows Future Storage (SQL Server 2003 based File System).
Windows File Systems:
Tables & File Sizes...
between NTFS, FAT, and FAT32:
NTFS vs FAT32 FAT16 FAT.Comparing.Performance.
- FAT Type and Cluster Size Depends on Logical Drive Size:
Quoting from Microsoft.com link (Above),
The following table (Below) describes the
compatibility comparisons of each File System with the various Operating
Some older programs may not run on an
(DOS Apps or Utilities) or the Windows Future Storage (WinFS). WinFS -
Rumored to be the new File System in Longhorn, the code name for the next
version of Windows Desktop after WinXP. Research your current
requirements for your software before converting File
- FAT File System Technology and Patent License: "The first
FAT file system was developed by Microsoft in 1976." (12/3/2003)
- FAT File System The Story Behind the Innovation:
- Overview of FAT, HPFS, and NTFS File Systems:
- Errors Creating Files or Folders in the Root Directory:
"This problem occurs when all
512 root directory entries have been used. This problem can also occur
with fewer than 512 files and folders in the root directory because
Windows 95 uses additional directory entries to store long file names.
NOTE: Any file whose name contains
more than 13 characters requires 3 or more directory entries."
File System for Windows:
- Description of the FAT32 File System:
- Limitations of FAT32 File System:
- Common Questions About the FAT32 File System:
- Description of Default Cluster Sizes for FAT32 File System:
"FAT32 - A derivative of the File Allocation Table File
System. FAT32 supports smaller cluster sizes than FAT, which results
in more efficient space allocation on FAT32 drives."
- Limitations of the FAT32 File System in Windows XP
- Windows Support for Large IDE Hard Disks
- Maximum Partition Size Using FAT16 File System
- How to Use the Fdisk Tool and the Format Tool to Partition or
Repartition a Hard Disk
- DOS NTFS Boot Disk
Windows 98 XP NT NTFS.com
- www.FDisk.com: Pointers to DOS
Software Operating Systems OS-2 Warp Server for e-business
- Files can be as large as the Partition size, up to 2 Terabytes...
- Fdisk Does Not Recognize Full Size of
Hard Disks Larger than 64 GB
NOTE: This hotfix is not designed for 48-bit
logical block addressing (LBA) hard disks, and it is not supported on
hard disks larger than 137 GB."
- Partition Zapper -
Deletes Partitions When FDISK Won't
FAT12 is the only format used on floppy diskettes!