Well, my sis's mobo fried and i got a different model and put it in its case. I told my dad that i have to take out her hdd, set it as slave, copy data to my hdd, set it back to master, put windows on it, then take it back out as a slave to put her data back on it and then set it as slave again for her comp.... so my dad wouldnt loose the data... he said that the mobo manual didnt say to do this.. and he said he wanted proof.. so have at it guys.. he just wants a yes or no answer