I do not understand very well what is going on...You have installed BT5r2, Am I correct?....You can install other OS but when trying to boot from them, It comes out with "Operating System not found", Am I correct?..
Can you load the BT5 and it shows desktop and everything?...Or happens the same thing as the other OS?
Need to be more specific to help you....
Do you can boot up from BT5?...


