Can you try mounting the filesystem in question, unmounting it straight away, and then running os-prober? If this works around the problem (I'm not suggesting it as a permanent solution), then this is the same as bug 683355.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/704538 Title: Unmounted OS are not found -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
