This is used to load as much of MS-DOS as possible above the 640k barrier. This leaves as much free conventional RAM for older programs as possible.
The BACKUP command is used to backup in DOS 6 plus version.
Yes it is used to comment Dos line
"fdisk" command is used for partitioning in DOS.
RD command is used to remove a directory (folder).
"time" command.
You can use "ver" command.
RD command is used to remove a directory (folder).
DIR
The Fdisk command is used to change hard disk partitions in DOS.
PROMPT command is an internal command, which is used to change the MS-DOS prompt. Through, the system displays the prompt bu default, when you start the computer.
Command prompt/line is used to execute entered commands. Command prompt is mostly commonly used to execute batch files, perform advanced administrative functions, and troubleshoot and solve certain kinds of windows issues.
DOS stands for Disk Operating System. To be useful computers have to have an operating system. The early IBM PC computers used the MS-DOS operating system. A DOS command is an instruction to the DOS operating system. It must be in a specific form. For example, the command DIR told the DOS operating system to list all files. These commands were typed at a place called the DOS command line. There a many such commands.