apparently it was as simple as adding this, but didn't see it before, I tried to downgrade bios and ruined my srix z390-i
Hi, I just wanted to warn you not update BIOS, I can't start my hackintosh anymore. This thread explains and has a solution but it's not work in Strix Z390-I.
A solution of ASUS new BIOS ver.2012 (not downgrading)
The best thing you can do is install in a ssd for now and when you understand more about the topic clone to nvme.
with the nvme supported, as samsung 950, 960 is easier, but yours that is not supported is more complicated