This is indeed expected in such a case with the 'full' image. The solution is to start with the 'mini.iso' and then install what you need (after purging the meta packages of course; aka (x/k/ubuntu-destop , xorg-input-all & xorg-video-all)
https://help.ubuntu.com/community/Installation/MinimalCD ** Changed in: ubiquity (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/1600594 Title: Unable to install Ubuntu 16.04 LTS and 16.10 with Ubiquity on system with 8 GB free space To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1600594/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs