A directory in DOS is like a folder in Windows: a collection of files.
Root directory is the highest level directory and this is the directory that appears first on the screen when you start MS-DOS. Generally, 'C' Drive appears on the MS-DOS screen as root directory.
A directory within an existing directory is called a sub directory.
mkdir
A "directory" in DOS is a "folder" in Windows Explorer.The terms are interchangeable, and some people call folders "directories" anyway.
type at DOS prompt CD c:\
It is called Directory..
folder or directory contents
MKDIR
rev command
DOSEXAFTERBREAKFAST
DIR
Creates a new directory or folder.