Now, to make the secondary drive your primary drive (after you have transferred all necessary files to that said drive), open the casing and locate your hard drive. Don’t forget to discharge any static electricity by touching the casing for a few seconds to ground yourself discharging the offending static charge in your body. Turn the power off and remove all the cables from the rear and front of the casing. Unscrew the hard drives and try to find the master and slave which can be seen in the jumper settings near the drive connector, also disconnect the power supply from the drives. If you have managed to identify the master and slave drives, remove the failing drive and change the jumper setting of the slave to configure it into the master drive(this would be easier if the master and slave were both formatted with their own MBR’s or main boot records). Connect all necessary cables and power up your computer and begin the setup procedure of your OS. Once the OS is re-set-up, reinstall all applications, drivers and other programs you may need and you can now transfer the copied files to their rightful place for use.