Thank you a lot for bringing very constructive contribution here. I feel well helped. I hope your attitude can bring a lot of people using linux and feel happy about it. Linux community is sure glad to have someone like you.

Thx for all the suggestions. Is there any mainboard which automatically unmount all other drives when you boot into an OS?

Sry there are some programs I need for work only working on windows

No Problem! Thank you anyway

Yes! Everytime my UEFI (sorry previous posters: I have UEFI) set my boot order to Windows Boot manager after booting into Windows. Why is Windows so penetrant?

No, Windows still erases my linux entry and that get me on nerve. It bypass my refind boot manager and boots directly into Windows. I have to remove Windows drive to boot into refind again

I have two separate drives

Yeah dunno if the anti cheat will detect or falsely interprete something and I will get banned

Can’t disable secure boot caus of anti cheat rootkit