I know this might seem a bit out dated, but I needed to know the Windows 7 Install CD I had if it was 32 or 64-bit. There are 3 ways to know:
Quickest way is to go to the drive root. If you have a file named
Bootmgr.efi you are running a X64/64-bit version.
Next way is disk size, the x86/32-bit version comes out at ~2.32GB whilst the x64/64-bit version comes out at ~3.0GB.
Finally, you can go to the drive root and open the
In notepad, the 64 bit version shows:
[AutoRun.Amd64] open=setup.exe icon=setup.exe,0 [AutoRun] open=sources\sperr32.exe x64 icon=sources\sperr32.exe,0
The 32 bit version shows:
[Autorun] open=setup.exe icon=setup.exe,0