I too have same issue I installed Ubuntu 16.04 along with Windows 7. I was using Live on installation using ROM. I got an error during installation that it failed to install GRUB with warning that I can not use this installation as first boot over hdd. I tried running boot-repair and it failed with attached error. Looking for help.
** Attachment added: "boot-repair error" https://bugs.launchpad.net/ubuntu/+source/appstream/+bug/1601971/+attachment/4759482/+files/boot-repair%20error -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1601971 Title: update fails, "AppStream cache update failed." To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/appstream/+bug/1601971/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
