It shows the volume of DOS.
compact
The VOL - DOS command displays the disk volume label and serial number, if they exist. See the related link for more information.
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fsck is the typical command for this.
Star Trek Starfleet Command Volume II Empires at War - 2000 VG was released on: USA: 11 December 2000
If you are referring to the Hayes command set, i.e. a telephone modem, the AT stood for attention and the L was for "L"oudness. It was the volume setting for the speaker.
To eject a USB stick from the command window in Windows, you can use the diskpart utility. First, open Command Prompt as an administrator, then type diskpart and press Enter. Next, type list volume to identify your USB drive’s volume number. Finally, type select volume X (replace X with your USB drive's number) and then remove all dismount to safely remove the drive.
It specifies the label of the volume. If you use the command format d: /v:hello It would format the d: drive on your computer and rename the disk "hello".
I believe it simply tells you what drive you are in. Such as C drive or D Drive.
select partition
DoDFMR (Volume 9 - Chapter 3)
Someone can resolve a unmountable boot volume in the PC by either running windows check disc from the command prompt or by reinstalling windows altogether.