<code>vol</code> is a shell command that reports identifying information about an accessible volume (a.k.a. logical drive) including its label and serial number.
The command is available in shells <code>COMMAND.COM</code> and <code>cmd.exe</code>. It is available in various operating systems including versions of DOS, FlexOS, 4690 OS, OS/2, Windows, ReactOS, PTS-DOS 2000 Pro, and EFI shell. In MS-DOS, it is available in versions 2 and later.
The <code>dir</code> command also displays the volume label and serial number (if any).
The command reports information about the volume associated with the working directory by default. If a drive letter is specified, then the command reports information about its associated volume. On Windows, the volume serial number is displayed only for disks formatted with MS-DOS version 4.0 or later. OS/2 allows the user to specify more than one drive.
In OS/2, the command line reports the label as "OS/2" and the serial number as "0815:1611" like:
In Windows, the command line reports the label as "Windows" and the serial number as "080F-100B" like:
If drive had no label, "has no label" would have shown instead of "is Windows".