Failed to install grub2 from ubiquity

[DavidZemon]

When installing Ubuntu GNOME I chose the following options:

Download updates - YES
Install 3rd party - NO
Keep UEFI - YES
Format:
  /dev/sda
    /dev/sda1: ext4 -> /
    /dev/sda2: untouched (Ubuntu 15.10)
    /dev/sda3: untouched (shared ext4 partition)
    /dev/sda4: untouched (swap)
Keyboard: USA
Login automatically: YES

Installation proceeds well until it attempts to install grub2, at which point syslog shows "grub-install: error: cannot find EFI directory"

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubiquity 2.21.49 [modified: lib/partman/automatically_partition/question]
ProcVersionSignature: Ubuntu 4.4.0-14.30-generic 4.4.5
Uname: Linux 4.4.0-14-generic x86_64
ApportVersion: 2.20-0ubuntu3
Architecture: amd64
CasperVersion: 1.367
Date: Sun Mar 20 10:22:43 2016
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/ubuntu-gnome.seed boot=casper quiet splash --- cdrom-detect/try-usb=true noprompt
LiveMediaBuild: Ubuntu-GNOME 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160319)
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)]

You have to have an EFI system partition to install in EFI mode. Did the installer not warn you about that and say you should go back and add one?

[DavidZemon (david-zemon)]

I don't remember receiving any actionable warning. I'll have to try again when I get home tonight to refresh my memory.

[Launchpad Janitor (janitor)]

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