Mrd removes a directory from an MSDOS filesystem.
An error occurs if the directory is not empty.
MSDOS subdirectory names are supported with either the '/' or '\' separator. The use of the '\' separator or wildcards will require the
directory name to be enclosed in quotes to protect it from the shell.
The mcd command may be used to establish the device and the current working directory (relative to MSDOS), otherwise the default is A:/.