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Subdirectory
In a hierarchical disk directory structure, a group of files in a
directory that is contained within another directory or the root
directory.
Switch
An optional specifier added to an MS-DOS command that
modifies the way the command works. Switches are typically
preceded by a / (forward slash). See also Command and
Parameter.
System diagnostics
A series of tests you can perform on the computer's
components and some peripheral devices to make sure they are
functioning correctly.
System diskette
A diskette that contains the operating system and that can be
used to boot the computer.
Tape drive
The physical device that allows you to insert large -capacity
magnetic tape cartridges for compact data storage and backup.
Tracks
Addressable, concentric circles on a disk, resembling the
grooves on a record, which divide the disk into separate
accessible areas. On a tape cassette, the tracks run parallel to
the edge of the tape. See also Sector.
Glossary 21
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