I have been trying to run Windows from an external Thunderbolt SSD drive by cloning my bootcamp partition to it - on a new MacBook Pro 16 inch. I have followed the tutorials of first taking my bootcamp partition and creating an image with WinClone 8, and then I restored it to the properly formatted (ExFAT) External thunderbolt SSD.
Upon booting to this drive, labelled EFI, and of course disabling the security on the Mac, allowing me to boot from an external drive, I am getting the “Inaccessable boot device” error.
However, when I do the workaround and use my USB key to inject the bootcamp drivers into the external SSD bootcamp drive, and install them using winclonefix.bat, it doesn’t change the “inaccessible boot device error.” ((Using this guide)
Has anyone gotten this to work correctly?