High Quality Content by WIKIPEDIA articles! In computing, the parent directory of a given directory A is the directory B in which A is located. In A's absolute path, B is the predecessor of A.In most computer file systems, every directory has an entry (usually named ..) which points to its parent directory, except the root directory, which is its own parent directory.Folder, directory, catalog, or drawer, in computing, is a virtual container within a digital file system, in which groups of computer files and other folders can be kept and organized. A typical file system may contain thousands (or even hundreds of thousands) of folders. Files are kept organized by storing related files in the same folder. A folder contained inside another folder is called a subfolder of that folder. Together, the folders form a hierarchy, or tree structure.