I recently built a new PC, but reused my previous M.2 and HDD since they are relatively new still and work fine. Upon booting my new PC for the first time, I ran into boot errors because it was trying to boot from the HDD, which I fixed by swapping to boot from my M.2 and everything worked fine. However, now I cannot find my HDD in File Manager, Disk Management, or even in BIOS. If I check boot options now, it just shows my SSD and 'DISABLED'. I've checked everywhere in BIOS and I can't seem to find a way to re-enable my HDD. All SATA ports show as empty in BIOS as well. I am perplexed by this and would love help fixing this.
Specs:
CPU - AMD Ryzen 9 3900x
GPU - Nvidia GeForce RTX 2070
MOBO - Gigabyte X570 Elite WiFi (AM4)
OS - Windows 10 Home 64bit
SSD - Samsung NVMe SSD 970 Evo Pro
HDD - Barracuda Compute 4TB
Specs:
CPU - AMD Ryzen 9 3900x
GPU - Nvidia GeForce RTX 2070
MOBO - Gigabyte X570 Elite WiFi (AM4)
OS - Windows 10 Home 64bit
SSD - Samsung NVMe SSD 970 Evo Pro
HDD - Barracuda Compute 4TB