DMG to bootable ISO

Hello,

I want to try making my laptop into a hackintosh and I managed to find both a guide, kexts and dmg image of Yosemite(vanilla, not Niresh or something altered), but here comes my current problem: I'm running Windows10 and I can't turn the dmg into a bootable iso with dmg2iso (with linux subsistem terminal).

My ideea of this plan went like this: I turn dmg to iso, make a VM in Virtualbox, play with it a bit then make a bootable usb with Sierra or HighSierra and instal, but when I try to boot off the iso VB errors "FATAL: No bootable medium found! System halted". I did run those commands in cmd to change the setting for the machine, but it does not do the trick. Also it does not boot off the dmg image.

How can I turn my Yosemite dmg to a iso that would allow me to run a VM that would serve as "playgound" for the rest of the plan?