Simon, Thanks for this.
I was aware of this in the sense that I know systemd can't be uninstalled whilst it is PID 1. Most recently this was discussed in #930105 and tagged wontfix. The only way I have managed to migrate systems reasonably cleanly is to boot with init=/bin/sh, replace systemd with whatever else and then reboot again. But as you point out, that is not the obvious migration route that a normal sysadmin might take. The problem is that the route recommended in #930105 (et al.) is to first install sysvinit-core, reboot and then remove systemd. The first step of this will require removal of almost the entire GUI environment -- something few would persist with even though it could all be reinstalled later. On Sun, Aug 11, 2019 at 03:31:00PM +0100, Simon McVittie wrote: > Possible solutions: > > (I don't know which of these would be helpful, I'm just speculating...) These are useful, thank you. I will experiment and see. Mark

