How to determine if your operating system is 64bit or 32bit while in setup mode

Whe your trying to install operating system and dont know the bit if 64 or 32 so try this one.
Correction on the video:
Windows 32bit shows only (program files)
Windows 64bit shows (program files & program files (x86) not (x64)
Commands used
X:
Dir
Where x is the drive letter. Press enter each command

Видео How to determine if your operating system is 64bit or 32bit while in setup mode канала Wayne's Link