Schwibinger Michael wrote: > Good morning > I did ask one year ago > but no answer here or in the www. > Debian has panic(=no booting) after update to 11. > Thank You for help > > Regards > Sophie > Boot from a rescue disk and look at the logs, or take a photograph of the screen when the error occurs. If you manage to boot from a rescue disk you could re-install grub. Probably it hasn't mounted the right disk.