I ran apport-collect at the time when the grub-install error appeared.
Also, I spoke too soon on the installation completing successfully if /boot/efi is removed: The newly-installed system's /etc/fstab still refers to the EFI partition on the original USB boot media, so the new system fails to boot.
I ran apport-collect at the time when the grub-install error appeared.
Also, I spoke too soon on the installation completing successfully if /boot/efi is removed: The newly-installed system's /etc/fstab still refers to the EFI partition on the original USB boot media, so the new system fails to boot.