How to detect the CPU and OS Architecture

Transcription

1 How to detect the CPU and OS Architecture The client I am working for now, has both XP and Windows 7. XP is 32 bits and Windows 7 is 64 bits. To avoid that I have to make the packages twice, I make both 32 and 64 bits versions. Depending on the CPU architecture the MSI is chosen. So I made the following code: Dim objwmiservice : Set objwmiservice = GetObject("winmgmts:\\.\root\cimv2") Set colitems = objwmiservice.execquery("select Architecture from Win32_Processor") if objitem.architecture = 0 then strarchitecture = "x86" if objitem.architecture = 9 then strarchitecture = "x64" next msgbox "The detected CPU Architecture is " & strarchitecture & "." On XP it returns x86 on a 32 bits version, but on Windows 7 x32 it returns x64. I suppose this is due to the fact that all the current processors are 64 bits. To work around I had to think differently. For example: on a computer with a 64 bits OS, you have for example a %Windir%\SysWOW64 folder. And that one is not on 32 bits OS. Dim objshell : Set objshell = CreateObject("Wscript.Shell") Dim objfso : Set objfso = WScript.CreateObject("Scripting.FileSystemObject") Dim strwindir : strwindir =

2 objshell.expandenvironmentstrings("%windir%") if objfso.folderexists(strwindir & "\syswow64") Then strarchitecture = "x64" else strarchitecture = "x86" msgbox "The detected OS Architecture is " & strarchitecture & "." The examples have been included in this script that shows the different ways to detect both the CPU and OS Architecture. ============================================================== ================================== Sevaral ways to detect the: - CPU Architecture - OS Architecture Created by Willem-Jan Vroom Initial version ============================================================== ================================== Declare the most variables Option Explicit Dim objfso : Set objfso = WScript.CreateObject("Scripting.FileSystemObject") Dim objshell : Set objshell = CreateObject("Wscript.Shell") Dim objreg : Set objreg = GetObject("winmgmts:\\.\root\default:StdRegProv")

3 Dim objwmiservice : Set objwmiservice = GetObject("winmgmts:\\.\root\cimv2") Dim strwindir : strwindir = objshell.expandenvironmentstrings("%windir%") Dim stros : stros = "" Dim strsummary : strsummary = "Details about this Operating System" & vbcrlf Dim colitems Dim objitem Dim strcpuarchitecture_wmi Dim strcpuarchitecture_registry Dim strosarchitecture_wmi Dim strosarchitecture_windir const HKEY_LOCAL_MACHINE = &H Detect the current OS Set colitems = objwmiservice.execquery("select Caption from Win32_OperatingSystem") stros = objitem.caption next Method 1: - Find the CPU Architecture via WMI Set colitems = objwmiservice.execquery("select Architecture from Win32_Processor") if objitem.architecture = 0 then

4 strcpuarchitecture_wmi = "x86" if objitem.architecture = 9 then strcpuarchitecture_wmi = "x64" next Method 2: - Find the CPU Architecture via the registry It can be found in: HKEY_LOCAL_MACHINE\HARDWARE\DESCRIPTION\System\CentralProcesso r\0 Hive: Identifier The value might be something like x86 Family 6 Model 42 Stepping 7 or Intel64 Family 6 Model 42 Stepping objreg.getstringvalue HKEY_LOCAL_MACHINE, "HARDWARE\DESCRIPTION\System\CentralProcessor\0","Identifier", strcpuarchitecture_registry if instr(strcpuarchitecture_registry,"86") > 0 Then strcpuarchitecture_registry = "x86" else strcpuarchitecture_registry = "x64" Method 3: - Find the OS Architecture via WMI Accoring to 39(v=vs.85).aspx this does not work on XP and below. To avoid an error message on XP an on error resume next has been included.

5 On Error Resume Next strosarchitecture_wmi = "" Set colitems = objwmiservice.execquery("select OSArchitecture from Win32_OperatingSystem") strosarchitecture_wmi = objitem.osarchitecture Next On Error Goto 0 if strosarchitecture_wmi = "" Then strosarchitecture_wmi = "Could not be detected." End if Method 4: - Find the OS Architecture to check if C:\Windows\SysWOW64 exists if objfso.folderexists(strwindir & "\syswow64") Then strosarchitecture_windir = "x64" else strosarchitecture_windir = "x86" Display the results on the screen strsummary = strsummary & "Operating system: " & stros & vbcrlf strsummary = strsummary & "CPU Architecture via WMI:

6 " & strcpuarchitecture_wmi & vbcrlf strsummary = strsummary & "CPU Architecture via the registry: " & strcpuarchitecture_registry & vbcrlf strsummary = strsummary & "OS Architecture via WMI: " & strosarchitecture_wmi & vbcrlf strsummary = strsummary & "OS Architecture via SysWOW64 check: " & strosarchitecture_windir & vbcrlf wscript.echo strsummary Some output examples: On XP x86: Screenrpint Windows XP x86 On Windows 8 x86: Screenrpint Windows 8 x86 On Windows 2008 Server x64: Screenprint Windows 2008 Server x64