Update: I didn't realize this Desktop could distinguish between 'legacy bios' and UEFI in the firmware (bios). My existing operating systems are installed in legacy bios mode. When I booted from the USB installer using firmware's boot chooser, I chose the UEFI version without realizing the significance of doing so.
I have now installed 17.04, having booted the USB installer in legacy bios mode. I do think that the installer could give much clearer guidance than the current obscure error message it pops up near the beginning of the installation process. I found the instructions here to be very helpful indeed: https://help.ubuntu.com/community/UEFI -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1653594 Title: 17.04 installer crashed while or shortly after installing grub2 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub-installer/+bug/1653594/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs