I don't think Virtualbox has a UEFI option, so I think virtualbox is (rightly) booting legacy. But still it can't boot from that ISO I just tried VMWare Player I notice that one can choose UEFI or not ...

If your Event Viewer Log says "The VirtualBox system service service terminated unexpectedly" with Event ID 7034, follow ...

PXE stands for Preboot Execution Environment and is a client-server interface that makes it possible for computers to be booted from a remote server on a network. This makes it possible for you to ...

If you find yourself with a mismatched VirtualBox and VirtualBox Extension Pack release, such that VirtualBox itself cannot resolve, Jack Wallen shows you how to fix this from the command line.