I have a win 10 pro x64 system running a GPT HDD. GPT mandates 64 bit systems and a win 32 bit system cannot exist in the presence of GPT disks. I want to run a win 10 pro 32 bit system in a VM such as Virtual Box. Can I specify the virtual disk as an MBR drive which would allow the 32 bit system to install. I've hunted through the Virtual Box manuals but I can't find an answer.
I'm asking the question because I can't just go ahead and do it. I have to do a fair bit of work adjusting partitions first which I don't want to do if it's a fail. The reason for the 32 bit system is I have a 16 bit program from circa 1994 that I need to run. Yes, it does run on win 10 on another machine right now but I would like to get rid of this machine.