grub2 (2.12-9pureos2) dawn; urgency=medium . * d/postinst: Auto-detect installation device on upgrades when not configured explicitly Accepted: grub2_2.12-9pureos2.dsc grub2_2.12.orig.tar.xz grub2_2.12-9pureos2.debian.tar.xz grub2_2.12-9pureos2_source.buildinfo Thanks to Sebastian Krzyszkowiak for the contribution.