While the Oracle VM Server Installer is booting, the installer runs
/sbin/loader
and then the screen goes black
on some systems, such as the Dell Optiplex 755. This is a hardware
issue related to the Intel 82Q35 Graphics Controller used on these
systems.
The fix is to disable Intel VT-d (Intel Virtualization Technology for Directed I/O) functionality within the BIOS.
Bug 17817142