If it looks like this you most likely need to flash the onboard u-boot.
To know for sure start it up with the bubbagen Live USB (it will boot with or without disk) and run the following command:
Code: Select all
strings /dev/mtd0 | grep "^U-Boot.*)"
If it returns version 2010.06-rc2-00064-gf41e8d8-dirty (Sep 08 2010 - 13:06:20) the unit can only boot from disks up to 2TB.