Question Internal HDD detected by BIOS and Device Manager, but not by Disk Management

[coreyc_]

I have an SSD that I use for Windows and games, and a new Seagate HDD that I plan to use for extra storage (both bought together for my PC build), but only the SSD is detected in Disk Management. The HDD is detected in BIOS and in Device Manager, but I have no way of accessing or using it. Any help? (For the bottom right corner of the pic; ST... is the SSD and WDC... is the HDD that is not working).

 

[rgd1101]

windows 10? check storage spaces https://support.microsoft.com/en-us/help/12438/windows-10-storage-spaces