Comment 5 for bug 1765628

I understand why flash-kernel was used, and in the past I myself have suggested its use (https://bugs.launchpad.net/raspbian/+bug/1723203 ). I've created installers for the pi using ubiquity (https://ubuntu-mate.community/t/aarch64-on-raspberry-pi-2-rev-1-2-3b-3b/16853 ) and the debian-installer, which is why I'm convinced flash-kernel is not fit for purpose on the pi.

To my knowledge there are currently no installers that use flash-kernel as intended on the pi. Currently you can't boot the generic armhf kernel on the pi (https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1795869 ), and the generic kernel uses different dtb names, so flash-kernel doesn't work even if you could boot the debian-installer. The Linux-raspi2 kernel doesn't have any udebs, nor does the debian-installer recognise the kernel (it absolutely refuses to install it on the target system).

If arm is switching to grub2, then grub-installer will be run by ubiquity/debian-installer instead of flash-kernel-installer.