[HELP]Cant get installer interface,(asrock h170m itx/ac)

[jackshawn]

I m new here,as recommended, i bought asrouck h170m itx/ac,6700k.I followed the installation guide ,as step3,there is no asrock recommended bios setting. I loaded defaults, disabled tv-d,cfg-lock,secure boot mode.and enabled xhci handoff,but didnt find os type and io seral port.after choosing boot macos from usb -v -x, mac os version not yet set.so,what i missed?forgive my poor english ,any help will be appreciated

 

[BreBo]

@jackshawn, please update your profile (personal details) with your build (Motherboard or Model, CPU and Graphics Card).

Profiles need to contain at least your primary system to assist others with helping you.

Boot your system in Verbose Mode and post a picture of your screen when it freezes/hangs.
How to Enter/Edit Boot Flags in Clover