Gidday, I'm still a bit new to this game but I will have a go, look at the U11 code trouble shooting in the manual page 87. OK you have done that, well what about the disk is it a well regarded brand and has it been pre-formatted? I am using the Panasonic RAM disk supplied with the unit and it works fine, I must admit though I can't see 'type 2' on the packaging.
Good luck, this is a great product and I am sure there is a simple fix.