Your installation medium contains files from yakkety. When reusing a USB drive to install another release or distribution, you need to format it first.
** Changed in: grub-installer (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1638599 Title: Installation of 16.04.1 with USB stick on Acer Aspire F 15; "cannot reach https://daisy.ubuntu.com; system is not booting To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub-installer/+bug/1638599/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs