The problem is that Ubiquity chooses grub-pc or grub-efi according to the mode in which the install disk is booted, which is not always the mode in which the firware is set up to boot the HDD.
The problem is that Ubiquity chooses grub-pc or grub-efi according to the mode in which the install disk is booted, which is not always the mode in which the firware is set up to boot the HDD.