seaken64
@olsztyn,
I think the grub team does not really focus on multi-booting. They leave that to others to solve. On a single boot system grub is fine, or with one Linux and Windows. But beyond that it’s pretty messy.
To be fair, the routines do work fine most of the time. I rarely have had a distro not be found and put on the menu as long as I am careful to install grub to the PBR. And we can edit the menu and make it just the way we want. And this is fine for a static computer that doesn’t change. We do it once and it’s done.
The problems come in when we do lots of experimenting and installs, over and over. Grub does not handle that well and there is no easy way to manage it yourself. That’s why some user’s like Grub Customizer or some other boot loader that is easier to manage. I used to use Lilo exclusively. I just gave up and surrendered to the crowd who has decided that grub is the bootloader for Linux now.
Seaken64