Installing Windows 10 x86 on a .vhd, 0xC0000359 when trying to boot

Zacchi4k said:

My host OS is Windows 10 Pro 1703 x64 (updating to 1710 as soon as released) on UEFI.
I created a blank .vhd file and initialized it (yes, I did use GPT), and I used the Windows AIK to install Windows 10 Pro 1703 x86 on it, and it shows in the boot menu, but when I try to boot from it, I get this:


I searched online and one website said that you can't boot x86 UEFI OSes on an x64 UEFI system. Other said it could be Secure Boot, but that's disabled on my PC.

So, is there any way to make this work or is it really impossible?

It is impossible to boot 32bit uefi on a 64bit PC without special boot loaders (some tablets can boot 32bit uefi but conversely cannot boot 64bit uefi.

You can only install 32bit on a 64bit as legacy bios.

It is not normally possible to dual boot 32bit bios and 64bit uefi as most PCs need to be in one state or the other. I do not know of any easy way to do this, other than having two physical separate installations and flip flopping between OS by selecting from bios.

The simplest option is to install the 32bit as MBR in a virtual machine.

The next simplest optical n would be to reinstall the 64bit OS as legacy bios/MBR, and then install the 32bit OS as a dual boot configuration (even in a vhd).