Physical disk and logical disk

A hard disk is a physical disk, meaning a unit of magnetic memory. The total area that can register information can be divided into several logical disks, for a more efficient use. In MS-DOS and Windows, each logical drive is associated with a point followed by the symbol ":" after a simple rule: with the letters A and B we note the floppy disk and start with the letter C: the logical disks. After logical disks, the next letters are used by CD-ROM, pen drives and other similar devices that could exist in the system.