blacksreen encounted while booting bootcd.iso from scsi block or controls

i tested ros 0.4.x bootcd both on virtualbox with scsi controller drive and kvm viostor scsi(redhat virtio controller) cloud computers.

as i posted on http://reactos.org/forum/viewtopic.php?f=2&t=15804

both ended up with blackscreen after "loading boot drivers". the " choose langauge and installation disk" cui just dont show,nothing happens.

i noticed that in vmware,the buslogic is a scsi one,it is a exception on realhw,vbox,or virtio vps?

hope there will be a fix,ty