set wshshell=createobject("wscript.shell")
sWinDir=wshshell.ExpandEnvironmentStrings("%WinDir%")
set fso=createobject("scripting.filesystemobject")
sysDrv= fso.GetDriveName(sWinDir)
set fso=nothing
set wshshell=nothing
wscript.echo sysDrv & vbcrlf & ShowRootFolder(sysDrv)
'From documentation
Function ShowRootFolder(drvspec)
Dim fso, f
Set fso = CreateObject("Scripting.FileSystemObject")
Set f = fso.GetDrive(drvspec)
ShowRootFolder = f.RootFolder
End Function