Drive letter assignment is the process of assigning alphabetical identifiers to physical or logical disk drives or partitions (drive volumes) in the root filesystem namespace; this usage is commonly found in Microsoft operating systems.
CP/M OS/2 CP/CMS Floppy disk CONFIG.SYS Disk partitioning Optical disc drive Directory (file systems) Hard disk drive Windows NT Windows 2000 MS-DOS Drive mapping Libnds SymbOS MK-DOS CSI-DOS Microsoft Banyan VINES ANDOS Operating system IBM CP-40 Long filename Boot disk Microsoft Windows History of CP/CMS Logical volume management RAM disk Mount (computing) VM (operating system) RSX-11 Atari TOS Novell NetWare Disk storage DOSBox Volume Mount Point Windows 9x OpenVMS X86 architecture System administrator