With sata you will see a primary master and slave as well as a secondary master and slave according the port you plug a drive into. oscaryu1 touched on that to some degree already. The post screen should be seeing two drives as master if you plug a second drive into the secondary master port instead of the primary slave port. There's nothing wrong there.
If the second drive was added after Windows was installed a quick visit into the Disk Management tool and device manager will show if the drive is working properly. In the "Control Panel>Administrative Tools>Storage" section you double click on the DM to see a window come up listing all drives installed including any floppy drives.
If seen there go into the device manager and try the uninstall option seen when right clicking on the drive when found under storage devices and restart the system. Windows should then perform a redetection of the drive and install drivers for it from it's own driver base in order to it added where you can partition and format it as a new logical drive if needed.
