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Topic: File Allocation Table

	File Allocation Table
		The FAT file system is considered relatively uncomplicated, and because of that it is popular format for floppy disks; moreover, it is supported by virtually all existing operating systems for the IBM PC, and because of that it's often used to share data between several operating systems booting on the same computer (a multiboot environment).
		FAT is a relatively early file system design, and because of that it suffered from several problems.
		Thirdly, the first versions of FAT allowed file name[?] sizes of only up to 11 characters (file name of 8 and a file extension of 3), although a work-around was developed when Microsoft implemented VFAT, that would allow file names of up to 255 characters.
	www.ebroadcast.com.au /lookup/encyclopedia/fa/FAT-32.html (1193 words)

	File Allocation Table - FAT - FAT32
		The File Allocation Table of contents of a computer disk which tells what sectors are used for what file.
		If the FAT table (Table 1) becomes corrupted, or what is known as disk errors, there is a second (backup) table (Table 2) available for programs like Scandisk uses to fix the FAT (Table 1).
		The FAT structure also maintains for each file a set of attributes (is it a System data set, should it be Hidden in the DIR display, should it be Archived next time the disk is backed up, is it Read-only).
	www.easydesksoftware.com /fat.htm (887 words)

	The file allocation table
		A cluster is the smallest unit of allocation in the dosfs filesystem type.
		FAT fields are 12 bits long in a FAT12 filesystem and 16 bits long in a FAT16 filesystem.
		When a DOS file is created or extended, disk sectors are assigned to it from the files area in powers of 2, known as ``allocation units'' or ``clusters''.
	uw713doc.sco.com /en/FS_admin/_The_File_Allocation_Table.html (428 words)

	File Allocation Table FAT DBR hard drives operating systems FAT32 file systems
		The FAT does not keep track of each and every sector on the disk surface instead it manages the disk area in a group of sectors called “cluster” or “allocation unit” (See the Cluster Discussed before, in the same chapter).
		The size of the directory entry for each file in FAT 32 is 4 bytes to contain the value of the starting cluster of the file rather than the 2 bytes needed under FAT16.
		When the File System of an Operating System is invoked by a program to find the contents of a file, the first cluster value, in the directory entry for that file, is read and used to find the FAT chain.
	www.datadoctor.biz /data_recovery_programming_book_chapter3-page23.html (777 words)

	file allocation table - 16bit
		number of sectors in one fat; for a floppy: 09,00 flip -> 00,09 covert to decimal = 9 * 512(bytes per sector) = 4608; there are two copies of the fat thus 4608 * 2 = 9,216 bytes - the jump to the root directory.
		the file allocation tables (fat) are positioned between the boot record and the root directory.
		properties are correct for the file and it can be opened and resaved to the same location, however it cannot be moved out of that folder nor renamed or deleted, to do so the foldername must be shortened.
	www.beginningtoseethelight.org /fat16 (5604 words)

	File Allocation Table
		The "File Allocation Table" itself is actually one of the structures inside the FAT file system as seen on-disk.
		The purpose of this table is to keep track of which areas of the disk are available and which areas are in use.
		A file is a stream of bytes located in the data area portion of the volume made up by one or more clusters.
	www.isdaman.com /alsos/protocols/fats/nowhere/FAT.HTM (2728 words)

	File Allocation Table - Wikipedia, the free encyclopedia
		File Allocation Table (FAT) is a partially patented file system developed by Microsoft for MS-DOS and is the primary file system for consumer versions of Microsoft Windows up to and including Windows Me.
		The version of the file system with this extension is usually known as VFAT after the Windows 95 VxD device driver.
		File undelete utilities must replace this character with a regular character as part of the undeletion process.
	en.wikipedia.org /wiki/File_Allocation_Table (5820 words)

	File Allocation Table - Computing Knowledgebase
		File Allocation Table is a Microsoft File System Format, and is used to store information about the files stored on a Volume.
		Maximum Number of files on a FAT16 Volume is 65536, with the maximum viewable number of files and folders in the Root is 512.
		VFAT stands for Virtual File Allocation Table, as is the name given to the Software Driver present in Windows 95 and newer, that acts as an interface between software applications, and the FAT File System.
	pc.wikia.com /wiki/FAT (345 words)

	File Allocation Table :FAT
		The FAT is the method used by DOS to organize and index a disks multiple sectors.
		The FAT must not only allow DOS to find the data that is associated with a particular file, it must also provide the correct order in which blocks of data should be accessed.
		For example, if a document is stored on a disk, and it requires 100 sectors, its not enough to know what sectors belong to the document, we must also be able to retrieve those sectors in the correct order.
	computer-help.com /dosfat.htm (219 words)

	NTI - FAT Defined
		For Microsoft DOS, Windows, Windows 95 and Windows 98, a File Location Table (FAT) is used to track which clusters have been allocated to a specific file.
		The FAT is relied upon by the operating system much like a road map to locate the data associated with a specific file.
		The FAT and differences between one Microsoft operating system and another is covered in detail in NTI's 5-Day Computer Forensics Training Course.
	www.forensics-intl.com /def27.html (280 words)

	File Allocation Table (Site not responding. Last check: 2007-10-13)
		Because one file may be in any number of blocks spread over the disk, the FAT links the file together.
		If a file consists of one or more blocks, the file may be stored in blocks that aren't adjacent.
		The FAT is accessed from the DET. It is cached in server memory, allowing the server to quickly access the data.
	www.novell.com /documentation/nw42/cncptenu/data/hin4mdg8.html (178 words)

	File Allocation Table Definition. Define File Allocation Table. What is File Allocation Table?
		Under the FAT {file system} each partition is divided into {clusters}, each of which can be one or more {sectors}, depending on the size of the partition.
		Each entry gives the number of the next cluster in the same file or a special value for "not allocated" or a special value for "this is the last cluster in the chain".
		The FAT file system was originally created for the {CP/M}[?] {operating system} where files were catalogued using 8-bit addressing.
	www.learnthat.com /define/view.asp?id=6048 (320 words)

	File Allocation Table File System (FAT, FAT12, FAT16)
		The basic name for this file system is FAT; the name comes from one of the main logical structures that the file system uses: the file allocation table.
		This file system is the one that was used by DOS on the first IBM PCs, and it became the standard for the PCs that followed.
		The first FAT file system used 12-bit file allocation tables; this was later expanded to 16 bits, and became the most common file system implementation for hard disks from the late 1980s to the late 1990s.
	www.pcguide.com /ref/hdd/file/fileFAT-c.html (497 words)

	File Allocation Tables
		The FAT entries are used by the operating system to chain together clusters to form files.
		The file allocation tables are stored in the area of the disk immediately following the volume boot sector.
		Damage to the FAT can of course result in data loss since this is where the record is kept of which parts of the disk contain which files.
	www.storagereview.com /guide2000/ref/hdd/file/fatFATs.html (303 words)

	What is file allocation table? - A Word Definition From the Webopedia Computer Dictionary
		Due to fragmentation, a file may be divided into many sections that are scattered around the disk.
		The FAT system for older versions of Windows 95 is called FAT16, and the one for new versions of Windows 95 and Windows 98 is called FAT32.
		Whether you're looking for a refresher on files systems or want to learn the difference between FAT file systems vs. NTFS file systems, this tutorial explains the ins and outs, and pros and cons of each.
	www.webopedia.com /TERM/F/file_allocation_table_FAT.html (202 words)

	iSwamp - Repair - File Allocation Table (FAT Repair) (Site not responding. Last check: 2007-10-13)
		The two FAT tables are supposed to remain syncronized.
		If the file size exceeds one cluster there is a marker at the end of the first cluster that indicates the location of the next cluster that is used by the file and so on, and so on.
		In these cases, you need to hope that the starting sector of each file can be properly identified and rebuilt (in memory) by whatever extraction software you choose to use.
	www.iswamp.com /content/view/18/26 (644 words)

	FAT :: File Allocation Table
		FAT / File Allocation Table is the system that an operating system maintains on a hard disk providing a map of the clusters that a file has been stored in.
		FAT / File Allocation Table was 16 bits in length in Windows and DOS until the release of Windows 95, which introduced 32-bit support.
		The FAT / File Allocation Table marks them with the special unusable status code.
	www.inforingpress.com /computer-careers/fat.htm (491 words)

	What is the File Allocation Table? (Site not responding. Last check: 2007-10-13)
		The FAT, or file allocation table is a record of where your files are stored on a disk.
		Note: As a rule, the second FAT is a backup in case the first is damaged.
		To prevent this kind of problem, one FAT is kept as a copy in order to recover a clean directory when there is an error.
	modecideas.com /faq81.html?newitems (1042 words)

	VFAT (Virtual File Allocation Table) Definition
		Stands for "Virtual File Allocation Table." Older Windows operating systems (Windows ME and earlier) used a file system called "FAT" or "FAT32." The file system is what the operating system uses to organize and access files on the hard drive.
		VFAT, introduced with Windows 95, was an improvement to the basic FAT file system, allowing more information to be stored for each file.
		While the FAT file system can only store 8 characters for each file name, VFAT allows for file names up to 255 characters in length.
	www.techterms.org /definition/vfat (129 words)

	FAT (Site not responding. Last check: 2007-10-13)
		The whole part of the product is the offset into the FAT, of the entry that maps to the cluster in the directory.
		Otherwise, the next 12 bits contain the cluster number of the next cluster in the file.
		Otherwise, the 16 bits contain the cluster number of the next cluster in the file.
	heim.ifi.uio.no /~stanisls/helppc/fat.html (199 words)

	NTFS.com FAT32 FAT16 File Allocation Table.
		The FAT file allocation system is named for its method of organization, the file allocation table, which resides at the beginning of the volume.
		In addition, the file allocation tables must be stored in a fixed location so that the files needed to start the system can be correctly located.
		The file File1.txt is a file that is large enough to use three clusters.
	www.ntfs.com /fat-allocation.htm (230 words)

	File Allocation Table FAT - FAT32 Monitoring software
		Once the FAT is corrupted your files start to be marked as free space.
		Their space is available to overwrite and if it looses the information about enough files you will need to Fdisk, format and maybe even low level format your hard drive.
		If you do not know what FAT is you may want to learn more about it and why it can destroy all your files if you do not know the table has been corrupted.
	www.easydesksoftware.com /fatmon.htm (343 words)

	What is file allocation table? - a definition from Whatis.com - see also: FAT
		A file allocation table (FAT) is a table that an operating system maintains on a hard disk that provides a map of the clusters (the basic units of logical storage on a hard disk) that a file has been stored in.
		When you write a new file to a hard disk, the file is stored in one or more clusters that are not necessarily next to each other; they may be rather widely scattered over the disk.
		The operating system creates a FAT entry for the new file that records where each cluster is located and their sequential order.
	searchexchange.techtarget.com /sDefinition/0,,sid43_gci213956,00.html (439 words)

	File Allocation Table
		beginning of the file is stored on the disk.
		The file allocation table (FAT) is created during the
		Note also the FAT is a one-way pointer.
	www.tpub.com /content/et/14091/css/14091_260.htm (274 words)

	FAT32 (File Allocation Table) (Site not responding. Last check: 2007-10-13)
		The article provides a table of logical drive sizes, FAT (File Allocation Table) types, and cluster sizes.
		This article explains the differences between FAT, HPFS, and NTFS under Windows NT, and their advantages and disadvantages.
		This article describes how to convert a hard disk that uses the File Allocation Table (FAT or FAT16) file system to the FAT32 file system using Drive Converter.
	www.generation.net /~hleboeuf/fat32.htm (210 words)

	Course Technology--InfoWeb: FAT
		File Allocation Table If you are a visual learner, you might find this Web page from the University of Wales, Cardiff, helpful in understanding the basics of FAT.
		It shows a simple, but effective, line drawing of a file allocation table.
		FAT File System and Disk Volume Structures If you have an inquiring mind and need to know everything sooner rather than later, you will enjoy the PC Guide's thorough discussion of the FAT file system and disk volume structures.
	www.cciw.com /content/fat.html (202 words)

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