Failed to install grub in UEFI mode

[Michael Blennerhassett]

1. Booted from Yakety live USB in UEFI mode
2. Selected "install over ubuntu 16.04"
3. Failed to install grub

ProblemType: Bug
DistroRelease: Ubuntu 16.10
Package: ubiquity 16.10.7 [modified: lib/partman/automatically_partition/question]
ProcVersionSignature: Ubuntu 4.4.0-34.53-generic 4.4.15
Uname: Linux 4.4.0-34-generic x86_64
ApportVersion: 2.20.3-0ubuntu6
Architecture: amd64
CasperVersion: 1.376
Date: Sun Aug 14 21:44:57 2016
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/ubuntu.seed boot=casper only-ubiquity quiet splash ---
LiveMediaBuild: Ubuntu 16.10 "Yakkety Yak" - Alpha amd64 (20160813)
ProcEnviron:
 LANGUAGE=en_AU.UTF-8
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_AU.UTF-8
SourcePackage: grub-installer
UpgradeStatus: No upgrade log present (probably fresh install)

[Phillip Susi (psusi)]

Your disk is currently partitioned to boot in bios mode, but you booted the installer in EFI mode. A warning message prompted you that this could be a problem and recommended performing a bios mode install instead, but you chose not to. You either need to perform the bios mode install, or partition the disk using GPT and set up an EFI system partition to install in EFI mode. This will be done for you if you choose the "use entire disk" guided install option.

[Michael Blennerhassett (mjblenner)]

Yep, I ended up using the "use entire disk" option.

But the "install over ubuntu 16.04" option shouldn't really be available, since there's no way it can result in a booting system in this case.

(The warning message also said "Debian" rather than "Ubuntu")

[Phillip Susi (psusi)]

Yes, I know it says Debian and it is a bit confusing the way it is worded, but you need to choose the cancel option to NOT install in UEFI mode and fall back to bios mode.