How to detect if Windows is running 32 or 64 bit from a command script: Difference between revisions

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[[Category:Vista tips and tricks]]
[[Category:Vista tips and tricks]]
  @if /I "%PROCESSOR_ARCHITECTURE%" == "AMD64" (
  @if /I "%PROCESSOR_ARCHITECTURE%" == "AMD64" (
  echo We are running I a 64-bit process on a 64-bit OS
    echo We are running I a 64-bit process on a 64-bit OS
  ) else if /I "%PROCESSOR_ARCHITECTURE%" == "X86" (
  ) else if /I "%PROCESSOR_ARCHITECTURE%" == "X86" (
  @if /I "%PROCESSOR_ARCHITEW6432%" == "AMD64" (
    @if /I "%PROCESSOR_ARCHITEW6432%" == "AMD64" (
    echo We are running in a 32-bit process on a 64-bit OS (WOW64)
      echo We are running in a 32-bit process on a 64-bit OS (WOW64)
  ) else (
    ) else (
    echo We are running in a 32-bit process on a 32-bit OS
      echo We are running in a 32-bit process on a 32-bit OS
  )
    )
  )
  )


Revision as of 14:01, 11 January 2008

@if /I "%PROCESSOR_ARCHITECTURE%" == "AMD64" (
   echo We are running I a 64-bit process on a 64-bit OS
) else if /I "%PROCESSOR_ARCHITECTURE%" == "X86" (
   @if /I "%PROCESSOR_ARCHITEW6432%" == "AMD64" (
      echo We are running in a 32-bit process on a 64-bit OS (WOW64)
   ) else (
      echo We are running in a 32-bit process on a 32-bit OS
   )
)

This is documented in Microsoft's document:

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