Public bug reported: This isn't so much a bug but a design flaw. I have a non-typical drive configuration. In using the Live session I manually installed mdadm, assembled a raid of 3 disks, unlocked luks container, tweaked some LVM stuff, and ran the installer on a new LV, to dual-boot beside an old install of ubuntu-unity 14.04
I should be able to complete the grub install manually. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: ubiquity 2.21.63 ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6 Uname: Linux 4.4.0-21-generic x86_64 ApportVersion: 2.20.1-0ubuntu2 Architecture: amd64 CasperVersion: 1.376 Date: Tue May 3 11:36:10 2016 InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/ubuntu-mate.seed boot=casper quiet splash --- LiveMediaBuild: Ubuntu-MATE 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1) ProcEnviron: LANGUAGE=en_CA.UTF-8 PATH=(custom, no user) LANG=en_CA.UTF-8 SHELL=/bin/bash SourcePackage: grub-installer UpgradeStatus: No upgrade log present (probably fresh install) ** Affects: grub-installer (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug ubiquity-2.21.63 ubuntu-mate xenial -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1577895 Title: fail to install grub on existing raid5 -> luks -> lvm system To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub-installer/+bug/1577895/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs