For example, the format command requires that you enter the volume label of a drive you're formatting, assuming it has one. The convert command does the same. If you don't know the volume label, you can't complete the task.
Follow these easy steps to find the volume label from the Command Prompt:
Note: You can also find a volume label of a drive from the drive's properties within Windows.
Open Command Prompt, located in the Accessories program group in the Start Menu.
Note: If Windows is not accessible, Command Prompt it is also available from Safe Mode in all versions of Windows and from System Recovery Options in Windows 7 and Windows Vista.
At the prompt, execute the vol command as shown below and then press Enter:
Important: Change c to whatever drive you want to find the volume label for. For example, if you want to find the volume label for the E drive, type vol e: instead.
Immediately below the prompt you should see something similar to the following:
Volume in drive C is System Volume Serial Number is C1F3-A79E
As you can see, the volume label for the C drive is System.
Note: If you instead see Volume in drive C has no label then it means exactly that. Volume labels are optional and your drive happens to not have one.
Now that you've found the volume label, you can close Command Prompt if you're finished or you continue executing additional commands.