SUBST

Associates a path with a drive letter.

The drive letter you assign represents a virtual drive, because you can use 
the drive letter in commands as if it were a physical drive.

Do not use the SUBST command when Win3x is running.

Syntax

    SUBST [drive1: [drive2:]path]

    SUBST drive1: /D

To display the names of the virtual drives in effect, use the following
syntax:

    SUBST

Parameters

drive1:
    Specifies the virtual drive to which you want to assign a path.

drive2:
    Specifies the physical drive that contains the specified path (if
    different from the current drive).

path
    Specifies the path that you want to assign to a virtual drive.

Switch

/D
    Deletes a virtual drive.

Related Command

For information about increasing the number of available drive letters, see
the <LASTDRIVE> command.