You will have to hook up your cdrw as a slave to your hard drive. The cable running from your motherboard to your hard drive should have a blue, grey, and black connector. First set the jumper on your cdrw to slave. On the back you should see a little diagram. So remove the pin and put it on the slave pins. Next hook your hard drive up to the black connector after making sure its jumper is set to master. Then hook the grey connector up to your cdrw. Give all of them power and you should be good to go.