New build: SSHD won't show up in BIOS, but sort of shows up in WIN 10 setup

Jul 30, 2018
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Hi guys, I'm building a computer for the first time. Everything seems to be going smoothly except for the fact that: My HDD isn't showing up in my BIOS. However, when I try to setup Windows 10 from a bootable USB, it shows up as Disk 0, but has no space.

Mobo: ROG STRIX x470-F Gaming
HDD: Seagate FireCuda Gaming SSHD 1TB