                            RD

RD is an internal command that removes a directory.  The directory must be
empty.  No files or subdirectories can be in it. RD will not remove any
subdirectories in the directory. (However, see the RDSTAR topic and the
RECOVER command EXAMPLES topic for ways to remove subdirectories as well.)

    RMDIR [d:]pathname
      or
    RD [d:]pathname

[d:] is the drive letter that contains the disk that has on it the directory
    you wish to delete.

pathname is the name of the directory you wish to delete.  If the directory
    is a subdirectory, you must specify the name of the parent directory,
    as well, unless the parent directory is the current default directory.
    \, ., and .. cannot be used.

Hint: If the DIR command does not show any files in a directory, but RD 
says "directory not empty" when you try to delete it, there may be a hidden
file in the directory. Also, there may be a disk drive letter linked to the
directory by the SUBST command. 
