pci bifurcation via software?

Hello guys,

Any chance to emulate pci bifurcation in an old legacy bios , I have Z800 HP Workstation , I can boot with success my nvme drive via clover but issue it’s system only see one nvme drive and not two with my pci adpatater msi m2 expander Z ?..

Any chance to do pci bifurcation or split via soft like clover or someting else ?.. thx