There is a solution to solve this problem. I get to post it in e few minutes under: "CD boot problem with FC4test1 AND test2" My problem was the isolinux bootloadter on the FC4T1 and T2 cd. With only copy the isolinux.bin file from the FC3 into the FC4 you can boot like under FC3. But it take some steps to do this. I hope my post will reach the list & I can go on with the manual for how to do this. Oliver