Lenge
1st February 2009 19:12 UTC

Detect 64-Bit OS
Hello world,

what is the "standard" (recommended) way to query if my installer is running on a 64-bit OS (like WinXP-64 or Vista-64)?

a) Is ${If} ${RunningX64} from x64.nsh meant for this purpose (or does it detect x64 CPU hardware instead)?

b) Can I combine WinVer.nsh with x64.nsh like that:

${If} ${IsWinXP}
  ${If} ${RunningX64}
    DetailPrint "Windows XP 64-bit"
  ${Else}
    DetailPrint "Windows XP 32-bit"
  ${EndIf}
${ElseIf} ${IsWinVista}
  ${If} ${RunningX64}
    DetailPrint "Windows Vista 64-bit"
  ${Else}
    DetailPrint "Windows Vista 32-bit"
  ${EndIf}
${ElseIf} ${RunningX64}
  DetailPrint "Any other 64-bit OS"
${Else}
  DetailPrint "Any other 32-bit OS"
${EndIf}

Or won't this code work as I expect?

kichik
1st February 2009 21:21 UTC

RunningX64 is exactly for this purpose.

If you want to combine it with WinVer.nsh, make sure you're using the latest version so Windows XP x64 won't be identified as 2003.