Internal And External Dos Commands. This command prepares a disk by arranging random magnetic. Internal command that expands the name of a file, directory, or drive, and display its absolute pathname as the result.

Date command is an internal basic dos command which is used to display or change current date of the system in the format of mm/dd/yy. Md, cd, time, date, copy, copr con, type etc. Format.exe, chkdsk.com, and diskcopy.exe are three examples of external.