I did everything from the start, left SMBIOS from multibeast at 14.2, and even tried both UEFI and legacy mode (from building the usb and selecting accordingly in multibeast). The only success I had, was that with UEFI my video card was detected correctly (as Nvidia gt710 1024mb) but the problem remains. I cannot start without the usb. I even tried to change the hdd sata connection by trying different slots, no luck. I tried a pci-e sata controller to connect the hdd, not detected... I am so curious of the way others had success booting from hdd after running multibeast and my system will not... Last thing I will try is to start everything from Snow Leopard DVD with iBoot, and build my way up to High Sierra... any help appreciated