Windows 10 on my SSD, Installed from my Blu-ray drive, and my Hard Drive isn't showing up:

[Kegan21]

As it says, I just finished my new build. I have an SSD with my OS on it and so far two maybe three programs. I would like to put my files and other junk/games on my Hard Drive. When I go to Device Manager it shows both the SSD and the Hard Drive, however in my folders or when installing anything I cannot select it. Any help? Thanks.

File Explorer looks like this:
Local Disk (C - which is my SSD
BD-RE Drive - which is my Blu-ray I am guessing
No other hardware...

 

[Suztera]

Go into Disk Management, right-click an unallocated region on your hard disk, and then click New Simple Volume. Follow the wizard and assign a letter to your drive.