I used the os-prober package included in arch-linux to auto configure GRUB. But it failed to make Haiku bootable. When I installed Haiku I got a nice GUI to configure the boot menu. It detect my Arch-linux installation and add the menu entry. But booting arch-linux fails. That is the reason I currently have to Haiku bootloader installed.
Does anyone have examples on how to add Haiku to GRUB?