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Drive mapping is how Microsoft Windows associates a local drive letter (A through Z) with a shared storage area to another computer (often referred as a File Server) over a
network Network, networking and networked may refer to: Science and technology * Network theory, the study of graphs as a representation of relations between discrete objects * Network science, an academic field that studies complex networks Mathematic ...
. After a drive has been mapped, a software application on a
client Client(s) or The Client may refer to: * Client (business) * Client (computing), hardware or software that accesses a remote service on another computer * Customer or client, a recipient of goods or services in return for monetary or other valuable ...
's computer can read and write files from the shared storage area by accessing that drive, just as if that drive represented a local physical hard disk drive.


Drive mapping

Mapped drives are hard drives (even if located on a virtual or cloud computing system, or network drives) which are always represented by names, letter(s), or number(s) and they are often followed by additional strings of data,
directory Directory may refer to: * Directory (computing), or folder, a file system structure in which to store computer files * Directory (OpenVMS command) * Directory service, a software application for organizing information about a computer network' ...
tree branches, or alternate level(s) separated by a "\" symbol. Drive mapping is used to locate directories, files or objects, and programs or apps, and is needed by end users, administrators, and various other operators or groups. Mapped drives are usually assigned a letter of the alphabet after the first few taken, such as A:\, B:\ (both of which were historically removable flexible magnetic media drives), C:\ (usually the first or only installed hard disk), and D:\ (which was often an optical drive unit). Then, with the drive and/or directory (letters, symbols, numbers, names) mapped, they can be entered into the necessary address bar/location(s) and displayed as in the following: Example 1: C:\level\next level\following level or C:\BOI60471CL\Shared Documents\Multi-Media Dept The preceding location may reach something like a company's multi-media department's database, which logically is represented with the entire string "C:\BDB60471CL\Shared Documents\Multi-Media Dept". Mapping a drive can be complicated for a complex system. Network mapped drives (on
LANs Lans or LANS may refer to: Places * Lans, Tyrol, a municipality in Tyrol, Austria * Lake Lans, a lake near Lans, Tyrol France * Lans, Saône-et-Loire * Lans-en-Vercors, a community near Grenoble in the Vercors * Villard-de-Lans, a community an ...
or
WANs WANS (1280 AM) is a southern gospel radio station located in Anderson, South Carolina, United States. The station is licensed by the FCC to broadcast with 5 kW. during the daytime and 1 kW. directional at night. Station history WANS 12 ...
) are available only when the host computer (File Server) is also available (i.e. online): it is a requirement for use of drives on a host. All data on various mapped drives will have certain permissions set (most newer systems) and the user will need the particular security authorizations to access it. Drive mapping over
LAN Lan or LAN may also refer to: Science and technology * Local asymptotic normality, a fundamental property of regular models in statistics * Longitude of the ascending node, one of the orbital elements used to specify the orbit of an object in spa ...
usually uses the SMB protocol on Windows or NFS protocol on UNIX/ Linux (however UNIX/Linux do not map devices to drive letters as
MS-DOS MS-DOS ( ; acronym for Microsoft Disk Operating System, also known as Microsoft DOS) is an operating system for x86-based personal computers mostly developed by Microsoft. Collectively, MS-DOS, its rebranding as IBM PC DOS, and a few oper ...
and Windows do). Drive mapping over the Internet usually uses the WebDAV protocol. WebDAV Drive mapping is supported on Windows, Mac, and Linux.


See also

* Mount (computing) * Drive letter assignment *
SUBST In computing, SUBST is a command on the DOS, IBM OS/2, Microsoft Windows and ReactOS operating systems used for substituting paths on physical and logical drives as virtual drives. Overview In MS-DOS, the SUBST command was added with the rel ...
– a command on the DOS, IBM OS/2 and Microsoft Windows operating systems used for substituting paths on physical and logical drives as virtual drives *
Disk formatting Disk formatting is the process of preparing a data storage device such as a hard disk drive, solid-state drive, floppy disk, memory card or USB flash drive for initial use. In some cases, the formatting operation may also create one or more new ...


References

Windows architecture Computer peripherals Network file systems {{computer-stub