opencore boot menu not showing macos

Hi, I am trying opencore with High sierra on AMD 2700, WSI B450 vdh pro max, and nVidia 750ti, I have done all the work with EFI folder files and the installation went smooth, both the initial 3 minutes copying files and later 18 minutes install process. But upon reboot, there is no option in opencore to boot into the system, the external install USB is shown only, what can I do at this stage and what could be the cause?

submitted by /u/Proof-Crow
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