grub2 install fails on 2008 macbook, gpt partition table

[deutrino]

Installing grub from the Lubuntu 16.04 disk does not work (this crash report is on a Macbook with GPT partition table, but this is about my 5th install attempt, and grub cannot be installed on an msdos flavor partition table either).

Root fs is ext4. There is no separate /boot partition. There is a 1MB biosgrub partition.

There is an efi partition created anew on this particular install attempt, but not having an efi partition makes no difference, the failure still occurs.

To be clear, I have not yet been successful AT ALL getting grub to install on this Macbook. It has failed every single time, often leading to dialog boxes which ignore the OK button, installer crashes, etc.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubiquity 2.21.63 [modified: lib/partman/automatically_partition/question]
ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
Uname: Linux 4.4.0-21-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
CasperVersion: 1.376
Date: Sat Jul 30 02:31:51 2016
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/preseed/ubuntu.seed boot=casper iso-scan/filename=/efi/boot/boot.iso quiet splash --
LiveMediaBuild: Lubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: grub-installer
UpgradeStatus: No upgrade log present (probably fresh install)

[Phillip Susi (psusi)]

Did you set the ESP to be mounted in /boot/efi? Grub says it can't find it there.

[deutrino (deutrino)]

I managed to get it working, and sadly didn't keep a record of what I did.

[Launchpad Janitor (janitor)]

[Expired for grub-installer (Ubuntu) because there has been no activity for 60 days.]