It looks like grub is being installed on the wrong drive (the USB drive that contains the installation image instead of the internal SSD).
** Attachment added: "Screenshot of grub-install /dev/sda" https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1528672/+attachment/4539177/+files/IMG_1973.jpg -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1528672 Title: Cannot perform clean install of Ubuntu 14.04.3 AMD64 from USB To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1528672/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs