I am using MacOS Catalina with dos1dude patch. I cant use Security warnings on apps. So that I decided to reset NVRAM and made it. After reset I got white screen error. I open Mac, goes to white screen, after waiting a while, it restarts the machine.

After searching on the net, I tried so much ways but couldnt solve. But I tried to select main disk on starting, here it is;

When starting Mac, hold the OPTION key. It will pop-up 2 options, one is EFI, second one is your disk. Select your disk and you will continue to use your mac.