Setup an SCU Bootstick
The fastest way to create an boot-able USB stick is to use an existing image. Download the image scu.img.bz2, decompress it and copy it to the USB device.
lbzip2 -d scu.img.bz2
dd if=scu.img of=/dev/insert-your-usb-device bs=1M conv=noerror
Warning: choose the correct device and not your system disk!*
Now put the usb stick in the scu and the system should boot. The system
is preconfigured with DHCP, so after 20s you should be able to login
with
User: root
Password: foobar