Confirming the behaviour stated by axeoth on 2012-09-26. For some reasons, existing grub.cfg files on other partitions seem to completely fool the update-grub scripts on other partitions (more precise, the linux-boot-order script).
The problem still exists with Xenial Mate uname -a: Linux xxxxx12 4.4.0-47-generic #68-Ubuntu SMP Wed Oct 26 19:39:52 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux Even confirmed, that os-prober gets fooled by a grub.cfg file on a non- system partition that contains a partial backup of a system partition (here: complete directory /boot)! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1017678 Title: Duplicate entries in grub2 menu for second ubuntu installed on another partition To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/os-prober/+bug/1017678/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
