How to determine OS Platform with WMI?

Question

I am trying to figure out if there is a location in WMI that will return the OS Architecture (i.e. 32-bit or 64-bit) that will work across \"all\" versions of Windows. I though

Answer 1

In batch

IF EXIST "%PROGRAMFILES% (x86)" goto 64BIT
goto 32BIT

:64BIT
echo tantalana a 64 bit
goto FINE

:32BIT
echo tantalaniccia a 32 bit
goto FINE

:FINE
echo ciao

Answer 2

If you need the Operating System architecture as opposed to the processor, this works if you're confident you have no 64 bit Windows 5.x systems:

Set colItems = objWMI.ExecQuery("Select * from Win32_OperatingSystem",,48)  
on error resume next  

For Each objItem in colItems  
    Ver = objItem.Version  
    OSname = split(objItem.Name,"|")  
    Arch = "32-bit"  
    if left(Ver,3) >= 6.0 then    ' 5.x doesn't support this property  
        Arch = objItem.OSArchitecture  
    end if  
Next  
wscript.echo " OS Version: " & Ver & " {" & trim(OSname(0)) & " " & Arch & "}"

Answer 3

After awhile of searching and testing, I've come up with a "fix/answer" although it's not exactly what I was hoping for. Performing the query from via the Registry appears to be consistent across all the version I have in my lab for Win2k3 & Win2k8. Here's where I am pulling the information from:

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Session Manager\Environment

KEY: PROCESSOR_ARCHITECTURE

It displays x86 or AMD64. It's not perfect, but at least it gives me the proper answer every time.

Still, if anyone knows a consistent 'Class' or Registry key that will output 32/64, 32-bit/64-bit, or X86/X64, I would greatly appreciate the information.

Answer 4

The environment variable 'PROCESSOR_ARCHITECTURE' is all that is needed. Just like the registry call this will return either 'AMD64' or 'x86'.

Answer 5

(Not tested), but maybe:

CIM_Processor Class (AddressWidth)

Answer 6

You can try the syntax below using wmic to determine the platform:

wmic path win32_processor where deviceid="cpu0" get Addresswidth