Managing Windows Drive Labels
Label volumes in a Windows-based virtual machine to ensure that they are correctly mapped before you export the virtual machine or create a snapshot of it.
Caution: Ensure that each volume has a unique identifiable label before running Sysprep (to prepare for an export or snapshot). This process requires administrator privileges.
To set a label from the command prompt, type:
C:\>label C:c-drive
To list and verify all volume labels, use the diskpart utility:
C:\> diskpart
DISKPART> list volume
...
DISKPART> exit
After importing the virtual machine, use Disk Manager to reassign the drive letters. The labels you assigned before the export or snapshot will help to identify the drives. For instructions on reassigning drive letters on a Windows system, search for the Microsoft Support web site.