Debian installer can't install Debian testing in VirtualBox when EFI enabled

[Licheng Hsu <lichenghsu@gmail.com>]

I don't know if it's the bug of Debian installer or VirtualBox,
anyway, when EFI is enabled in VirtualBox, Debian testing just can't
install whatever Graphics Controller is in VirtualBox.

I am using VirtualBox 7.0.8 and 6.1.44, and the lastest Debian testing
ISO released on April 17, 2023.


Licheng Hsu