This is similar to bug #1303790, but I am not sure it is a duplicate since this case involves grub-pc being installed instead of grub-efi, but it seems that like that other bug, ubiquity is falsely claiming that grub-install failed when it did not.
This is similar to bug #1303790, but I am not sure it is a duplicate since this case involves grub-pc being installed instead of grub-efi, but it seems that like that other bug, ubiquity is falsely claiming that grub-install failed when it did not.