Hey there !
I was just trying to get MacOS running on VirtualBox on my Windows 10 computer. To get this done I followed this great HowTo:
However I get to Step 7 of this article and everything works fine. But when I boot the VirtualBox (with ISO ejected) I get stuck at the EFI Internal Shell:
The only difference from the HowTo and my set up is that I´m using an iso of MacOS Mojave which a friend of mine created with his Mac.
I´m grateful for any help!
Please let me know if you need further information.