Problem with detecting file system

[Doc Symbiosis]

Hi there, in a vb-Script I wanted to do a little automatic Filesystem detecting, I stumbled across the following:

When I try to run the follwoing script with an existing, but nonformated drive d:, no message is shown. Works fine, when drive d: has NTFS or FAT. Can anyone explain why?

strComputer = "."
Set objWMIService = GetObject("winmgmts:" & "{impersonationLevel=impersonate}!\\" & strComputer & "\root\cimv2")
Set colDisks = objWMIService.ExecQuery ("Select * from Win32_LogicalDisk Where DeviceID = 'D:'")

For Each objDisk in colDisks
  If NOT (objDisk.Filesystem="NTFS") Then 
	  Wscript.Echo "This is No NTFS"
  End If
  If (objDisk.Filesystem="NTFS") Then 
	  Wscript.Echo "This is NTFS"
  End If
Next

Thanks in advance

Edited January 17, 2006 by Doc Symbiosis