Processing control commands: > severity -1 important Bug #865417 [efibootmgr] efibootmgr: grub-install dummy failed in Stretch installation Severity set to 'important' from 'critical' -- 865417: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=865417 Debian Bug Tracking System Contact owner@bugs.debian.org with problems