It's a long story,It take me two days,The first day i reinstall the Rmos,then distribute,but mc controller no normal run and display unable to load mc_386,i think maybe my install method is incorrect. i change a new one use the same method in this morning, then the mc can normal run.then use the old mc ,reinstall mc use the same method,ng yet.so the mc hard disk in damage. during the repair ,i change the mc control card.so the card is ok, so only remain the hard disk.