Hello there,
I just want to buy a new gaming system, laptop, because I want to be mobile. There is only one game I cant give up that is league of legends. So I’m searching a manufactor, which can handle dual boot perfectly. I mean everytime I boot into windows and want to reboot into linux again, so my entry is gone (refind, systems and grub). Maybe there is a brand which separate two OS Hardware wise or has a BIOS espacially for such a case?
Agreed. Windows updates will very likely break your single-drive dual-boot at some point. So, use two different drives and use your bios/efi to choose which one to boot.
Edit: check out https://hackaday.com/2021/11/30/linux-fu-the-ultimate-dual-boot-laptop/
Edit 2: Framework 16 looks like it would meet your needs. It has two M.2 sockets for drives. https://frame.work/products/laptop16-diy-amd-7040