Extended Memory

Memory above 1MB that is accessed by the protected mode of the 80386SX microprocessor and available to some application programs and operating systems.

Extended partition

An additional MS-DOS partition; you can create one primary MS-DOS partition and one extended partition.

Extension

A suffix of up to three characters that you can add to a filename to better identify it.

External command

An MS-DOS command stored in a program file. MS-DOS must be able to find the program file to execute the command. See also Internal command.

Fast boot

The Equity 386SX function that reduces the time it takes the computer to run power-on diagnostics.

File

A group of related pieces of information called records, or entries, stored together on a disk. Text files consist of words and sentences. Program files consist of codes and are used by computers to interpret and carry out instructions.

Filename

A name up to eight characters long that MS-DOS uses to identify a file.

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