WD My Studio External Drive Not Showing all drives

I Have A mac Mini 2011 with 2 drive A SSD & HDD when I connect my studio drive it would only show the ssd not hdd how can I get to show both drives at the same time when I open smartware. I use the SSD to run My Apps (Itunes, Iphoto ect…) and the HDD to stored all my media files.

Check on the disk utility to see if the studio drive is taking the letter for the HDD that is installed on the computer.