Also on Debian based systems [LWN.net]

Also on Debian based systems

Posted Aug 1, 2020 5:36 UTC (Sat) by gfernandes (subscriber, #119910)
In reply to: Also on Debian based systems by Wol
Parent article: Grub2 updates for Red Hat systems are making some unbootable

I did that at first, the first time I installed to a UEFI laptop. And ended up using the UEFI boot menu to switch.

I later realised that all OSs should _add_ to the same UEFI partition, that should already be there if you got an off the shelf laptop with WhineDoze preinstalled.

So I now first increase the size of the UEFI partition, and then install Fedora on another disk with /boot/efi pointing to the same UEFI partition. And since then, dual boot works fine and can be driven from the grub menu.