2012 13" MacBook Pro [3rd,2C,M] + RX 580 @10Gbps-TB1>TB3 (Razer Core X) + macOS 10.15.6 & Win10 [evad604]
@nu_ninja, thank you fo the clarification. so no need to try mbr installation at all, i will go right for uefi.
I will open my own build thread once i have some results.
I already got the transcend thunderbolt adapter and gumstick to M.2. I am just waiting fo the chinese m.2 to pcie now.