Question Recognizing my harddive but not in the boot priority.

[Caisy]

So i recently bought an Asus z370-f.
When i powered on my pc after cabling everything up, my harddives where nowhere to been seen in the boot priority. However it still recognized then under storage and I can also erase everything on them through BIOS.

I have made sure its using AHCI. Also reseted BIOS through cmos. It wont even let me Update BIOS through my USB even tho its FAT32 format, it will just say that the Cap file is not a BIOS.

I have never stumble upon a issue like this before.
Perhaps a something i've missed on the Asus z370-f?

 

[Traditore]

Enable CSM in BIOS.

Do you already have Windows installed on one of the drives? Because if not, then you should just start Windows installation, it will see your hard drives and you'll have 'Windows Boot Manager' as a boot device after installation.