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For example, in DOS 5, if the current directory is C:\TEMP, then TRUENAME command.com will display C:\TEMP\COMMAND.COM (which does not exist), not C:\DOS\COMMAND.COM (which does and is in the PATH). This command displays the UNC pathnames of mapped network or local CD drives. This command is an undocumented DOS command.
The category Internal DOS commands deals with articles about DOS commands built into the command processor (COMMAND.COM, 4DOS.COM, NDOS.COM, DOSPLUS.COM, ...
The category DOS commands deals with articles related to internal and external commands supported by members of the family of DOS compatible operating systems for IBM PC compatible computers, such as MS-DOS, PC DOS, DR DOS, Concurrent DOS, Multiuser DOS, REAL/32, FlexOS, Novell DOS, PalmDOS, OpenDOS, FreeDOS, RxDOS, ROM-DOS, Embedded DOS, etc.
MS-DOS/PC DOS versions 4.0 and earlier assign letters to all of the floppy drives before considering hard drives, so a system with four floppy drives would call the first hard drive E:. Starting with DOS 5.0, the system ensures that drive C: is always a hard disk, even if the system has more than two physical floppy drives.
MS-DOS / PC DOS and some related disk operating systems use the files mentioned here. System Files: [1] IO.SYS (or IBMBIO.COM): This contains the system initialization code and builtin device drivers; MSDOS.SYS (or IBMDOS.COM): This contains the DOS kernel. Command-line interpreter (Shell): COMMAND.COM: This is the command interpreter.
The farther away the directory cylinder is, the more the drive's read/write head will need to move, which slows disk access and produces more mechanical wear on the drive. TRSDOS has commands permitting the user to optimize placement of particular files on the disk's physical space, and the FREE command to display a map of a file's physical ...
The MS-DOS version was originally written in August 1982. [13] [14] It is available in MS-DOS versions 2 and later. [15] Digital Research DR DOS 6.0 [16] and Datalight ROM-DOS [17] also include an implementation of the diskcopy command. The FreeDOS version was developed by Imre Leber and is licensed under the GNU GPL 2. [18] The command is not ...
In computing, label is a command included with some operating systems (e.g., DOS, [1] IBM OS/2, [2] Microsoft Windows [3] and ReactOS [4]).It is used to create, change, or delete a volume label on a logical drive, such as a hard disk partition or a floppy disk.