This BIOS allows you to choose the boot device by either using the arrow keys or clicking/touching the monitor.
When using the keyboard use Enter to boot, when using clicking/touching click an unselected entry to select it, click a selected entry to boot it.
If there is only one bootable medium, that medium is autobooted.
The default selected option is the last booted device.
This supports booting from filesystems, using /init.lua as an entry point or from drives(HDDs or Floppys in unmanaged mode), by loading code from the first sector until the first \0 character appears a