In some operating systems, vol is a command within the command-line interpreters (shells) such as COMMAND.COM and cmd.exe.

It is used to display the volume label and volume serial number of a logical drive, such as a hard disk partition or a floppy disk, if they exist.

[1] The command is available in various versions of DOS,[2] DR FlexOS,[3] IBM/Toshiba 4690 OS,[4] IBM OS/2,[5] Microsoft Windows,[6] and ReactOS.

[8] Paragon Technology Systems PTS-DOS 2000 Pro also includes a vol implementation.

[9] The Windows dir command also displays the volume label and serial number (if it has one) as part of the directory listing.