Lost my harddrive installing CD-rom

Just installed a CD-ROM but lost the harddrive read manual how do I set the Hardrive as master.

Thanks

Google was my friend sorted!

Care to share? It will be helpful for other members in the future.

3 sets of jumpers on back of CD-ROM need to set it up there has it marked on the case which is which. Was set up as master as it was in my PC so tends be set up that way so you can reboot from disk if need be.