Microsoft DOS map command
The map command is a recovery console command that displays the physical device name of a drive letter.
The map command is a recovery console command that is available in the below Microsoft operating systems.
Displays a mapping of drive letters to physical device names. This information is useful when you run the fixboot and fixmbr commands. The map command is only available when you are using the Recovery Console
arc Instructs the map command to display Advanced RISC Computing (ARC) device names instead of device names.
Displays all of the device names.