![]() ![]() ![]() Then connect it as an 'external' drive to another Mac. One can presume that it may be the case that the Mac Pro has been fitted with an upgraded video card which does not have Mac firmware and hence does not support these pre-boot features.Ī suggest for akadmon is to if possible fit the original video card which would have Mac compatible firmware and should support these pre-boot features.Ī second suggestion would be to boot the Mac Pro in to Target Disk Mode by holding down T on the keyboard. Hence it is not possible to use a standard USB boot drive. ![]() The post is saying Option for accessing the Boot Selection screen and Command-R for Internet recovery are not working. Some people seem to have missed a vital point from the original post. ![]()
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