Anyway, Jack thanks a lot for your try. I will make short video to show all and perhaps someone will be able to detect detect my error. I have a second Xbox sofmoded long time ago with big HD made with old method (xboxhdm on a PC) but I not have any more old pc and dvd burner to do that The stange thing is that if I tried to use Chimp on this xbox it does ecactly the same issue. So pretty sure that it is something with my way of doing the job. One question, is it possible to run Chimp without swap from the DVD to the new big HD, just to verify ?