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- #Sector: An area of disk storage used by DOS to store data and programs. In
- DOS Version 2, there are nine 512 byte sectors per track.
-
- See also TRACK and CLUSTER.
- #Serial Printer Interface: An interface to a printer wherein the eight bits
- representing a character are sent one at a time. This is distinguished from a
- Parallel Printer Interface, which sends all eight bits of a character at one
- time.
- #Single-Drive Operation: Refers to using a computer that has only one diskette
- drive with commands that work with two diskettes. For example, the DISKCOPY
- command, which copies the entire contents of one diskette to another, requires
- two diskettes, the Source and the Target. DOS can do this using a single drive
- by alternately using it as the Source and Target. DOS prompts you at the
- appropriate time to switch diskettes.
- #Source: An original diskette or file. The terms Source and Target are often
- used together. Source indicates the starting point, while Target indicates the
- destination. For example, with the DISKCOPY command, which copies the entire
- contents of one diskette to another, the original diskette is called the Source
- and the diskette on which the original will be copied is called the Target.
-
- See also TARGET.
- #Subdirectory: A directory that lies within another directory. DOS allows you
- to create directories in a hierarchical (tree) manner. The highest level
- directory is called the "root" directory. The root directory is created by DOS
- when a disk is formatted. You may create directories within the root directory,
- directories within those directories, and so on.
-
- For example, you could create a directory called BUDGET within the root
- directory. BUDGET would be a subdirectory of the root directory. You might
- then create a directory called DATA within BUDGET. DATA would be a subdirectory
- of BUDGET.
-
- See also DIRECTORY, DIRECTORY PATH.
- #System Configuration: DOS has system configuration settings which are assigned
- default values when DOS is started. Some default values may be overridden by
- placing new settings in a special file, CONFIG.SYS. When DOS is started, it
- looks for a file named CONFIG.SYS, and if found, activates the settings
- contained in the file.
-
- See CONFIG in the ADVANCED menu for DOS configuration settings.
- #System Date: The date known to DOS. When DOS is started, it prompts
- you for the time and date. DOS then keeps track of the current time and date
- and makes them available to commands and application programs.
-
- The DATE command shows the system date and lets you change it.
- #System Environment: A series of names and parameters stored in memory by DOS
- and made available to commands and application programs.
-
- The SET command places (and removes) the names and parameters in the command
- processor's environment.
- #System Prompt: The characters displayed by DOS at the beginning of the command
- line. The default prompt is "d>", where "d" is the default drive letter. You
- may change the form of the system prompt with the PROMPT command.
- #System Reset: Restarting (rebooting) DOS. This is done by holding down the
- CTRL key, the ALT key and then pressing the DEL key. This restarts DOS without
- turning the computer's power off and on.
- #System Time: The time of day known to DOS. When DOS is started, it prompts
- you for the time and date. DOS then keeps track of the current time and date
- and makes them available to commands and application programs.
-
- The TIME command shows the system time and lets you change it.
- #Target: The destination diskette or files. Distinguished from the
- original diskette or files, called the Source. For example, in the DISKCOPY
- command, which copies the entire contents of one diskette to another, the
- original diskette is called the Source, and the diskette on which the original
- will be copied is called the Target diskette.
-
- See also SOURCE.
- #Timeout: An error condition raised by DOS when a device is not ready for use
- within a certain period of time. For example, if you try to print information,
- but the printer is not turned on, DOS will abort the print request after a
- certain amount of time has elapsed. This is a timeout error with the printer.
- #Track: A circle on a disk where data is stored. DOS Version 2 uses 40 tracks
- (concentric circles) on each side of the diskette. Each track is divided into
- nine areas, called sectors. Each sector contains of 512 bytes (characters) of
- information.
-
- See also CLUSTER and SECTOR.
- #Virtual Disk (See RAM Disk)
- #Volume Label: A character string assigned to a disk to provide identification.
- The volume label has no significance to DOS. Its purpose is to allow you to
- identify your disks. A volume label may have up to eleven characters.
-
- The VOL command displays a volume label. The LABEL command (DOS Version 3)
- creates, changes and deletes a volume label. In DOS Version 2, a label may
- be created only when the disk is formatted (via the FORMAT command).
- #Wildcard (See Global Filename Characters)