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     Glossary




Glossary F


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FAT and FAT32

See File Allocation Table.

FDISK

The disk-partitioning program used in DOS and several other operating systems to create the master boot record and allocate partitions for the operating system's use.

File

A collection of data grouped into one unit on a disk.

File Allocation Table

(FAT or FAT32) Operating systems use FAT to keep track of which clusters are allocated to which files and which are available for use. The FAT links together all of the clusters belonging to each file, no matter where they are on disk.

FAT32 is a newer type of FAT that was designed to handle large hard disks. The older FAT (FAT16) can only support partitions up to two gigabytes in size. FAT32 can handle partitions that are thousands of gigabytes.

File System

A system for organizing directories and files, generally in terms of how it is implemented in the disk operating system.

Firmware

Software contained in a read-only memory (ROM) device.

Firmware

Permanent instructions and data programmed directly into the circuitry of read-only memory for controlling the operation of the computer or disk drive.

Flying Height

The distance between the read/write head and the disk surface, made up of a cushion of air that keeps the head from contacting the media.

Folder

Commonly used as a standard Windows 95/98/NT term, equivalent to the Windows 3.x term directory.

Format

The DOS format program that performs high-level formatting on a hard disk, and both high- and low-level formatting on a floppy disk.

Fragmentation

The state of having a file scattered around a disk in pieces rather than existing in one contiguous area of the disk. Fragmented files are slower to read than unfragmented files.


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