Noticed that syslog has various messages about the os-prober generated during update-grub but tellingly NO reference to and md device, just the constituent partitions.
** Attachment added: "syslong during update-grub" https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1217933/+attachment/3792769/+files/syslog.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1217933 Title: update-grub fails to detect other md OS To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1217933/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs