[Users] ovirt-node-iso-2.3.0-1.0.fc16.iso not worked for me.

Hi everybody, I downloaded ovirt-node-iso-2.3.0-1.0.fc16.iso from ovirt site, use livecd-iso-to-disk to create an usb installer, then boot from it. The boot options are the same as a fedora live image. No matter which option i chose: Start ovirt node, install in console, reinstall, reinstall in console, instead of an install wizard, I got a login screen with no clue to go on. The hardware is a typical supermicro server with 2x5620 xeon, 48GB RAM. Any idea what's going on ?