2nd Hard drive lost? pls help!

Hello,

Please help me - I had a previously working 2nd hard drive (sata) but now when I boot up, it is not being recognized as formatted. I see the local drive available but no indication of 'type' or free space available. Is there anything I can do to try and fix it so it will be again be seen as formatted (without having to format the disk)?

I don't know much about the settings but follow directions pretty well so any input would be appreciated.

Thank you.