The solution is to use Ventoy VHD(x) file in the 1st partition. Put your Windows.VHD(x) file in the 3rd partition, which must be NTFS. In Ventoy boot menu, push F2 to boot to your VHD(x) file.
https://www.ventoy.net/en/plugin_vhdboot.html
https://www.ventoy.net/en/plugin_vhdboot.html

