What is Linux Root Directory & root folder?

What is Linux Root Directory & root folder? ***************************************************** Hi Guys, The root directory contains all other folders in the drive or folder, and can, of course, also contain files . You can visualize this with an upside-down tree where the roots (the root folder) are at the top and the branches (sub folders) fall below; the root is what holds together all of its lower items. The root folder, also called the root directory or sometimes just the root , of any partition or folder is the "highest" directory in the hierarchy. You can also think of it in general as the start or beginning of a particular folder structure. In a computer file system , and primarily used in the Unix and Unix-like operating systems , the root directory is the first or top-most directory in a hierarchy. It can be likened to the trunk of a tree , as the starting point where all branches originate from. The root file system