WBAdmin Get Disks
Allows you retrieve a list of disks that are currently online for the local machine.
This action only applies to Windows Server 2008/Server 2008 R2.
Settings
Save To Output Variable
Specify the variable to save the output to.
Save All Output
Saves entire output of command to selected variable.
Save Specific Values
This option allows you to specify the detail that you want to capture:
Disk Name
The name of the current disk
Disk Number
The index of the current disk
Disk Identifier
The disk identifier (GUID) for the current disk
Total Space
Total disk size for the current disk
Used Space
The amount of space in use for the current disk
Volumes
Volume letter(s) and volume name(s) for the current disk
For more information please see