@psusi, this is a very valid issue and I could reproduce it on an Asus UX32VD with UEFI. On this machine, there is no way in the system setup to select between UEFI or BIOS.
If I boot a 32 bit image from an USB stick, it will boot in BIOS mode. Installation is successful and the EFI partition is not created. If I boot a 64bit image, it will boot in EFI mode. If a 32bit OS is already installed and I choose a side-by-side installation then there is no warning, EFI partition is not created and the installer crashes with this bug. This is the issue I reported in bug 1302418. I'm reopening this issue and set it to critical given the number of reports already received. ** Changed in: grub-installer (Ubuntu) Status: Invalid => Triaged ** Also affects: grub-installer (Ubuntu Trusty) Importance: Critical Status: Triaged ** Changed in: grub-installer (Ubuntu Trusty) Assignee: (unassigned) => Canonical Foundations Team (canonical-foundations) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1299134 Title: grub-installer failed during install trusty 64bit To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub-installer/+bug/1299134/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs