I have successfully installed Mojave on my 4.1->5.1 on internal SATA SSD. No troubles at all, everything worked as charm. But when I tried to do a clean Mojave install (from internal SSD as Mojave boot drive) it starts well but then I get the message "Installing macos Mojave on this mac requires that all graphics cards have Metal support and that FileVault is disabled" I do have a Metal compatible graphics card (upgrade High Sierra -> Mojave was with no issues and everything was working fine) so I am guessing that FileVault is creating some kind of problem here. Any ideas? Would REALLY appreciate if anyone can help! Thanks in advance!