In cMP 5.1, Installed windows2go on a separate SSD, I have High Sierra on the other ssd, both SSDs installed on same Sonnet Tempo PCIE card, I can boot Windows from Boot screen as I have flashed Video Card, but nomatter what Bootmanager i try, i always get black screen "No Bootable Operating System Found", I tried all Boot managers: Bootchamp, QuickBoot-1.1-92, Boot_Manager_v2.1.1, always black screen, Disabled SIP completely just to make sure.
Do I need to a clean firmware to be flashed to my cMP? as I have installed Windows 10 normal way and was having lot of boot problem back then, then I removed all UEFI Windows and installed Windows2go in legacy mode, what can I do to make Boot Managers work as I will be replacing the current GPU with AMD one without boot menu..
