Grub thinks there is no bios boot partition, yet there is

[Claudius Raphael Paeth]

Ubuntu 18.04

OEM-mode Install from live-environment
on biosboot gpt ext4 setup
crashed...

Reason unknown - times it works, times not; Sorry, nothing to add right now.

ubuntu@ubuntu:~$ lsb_release -rd
Description: Ubuntu 18.04 LTS
Release: 18.04

apt-cache policy grub-pc
grub-pc:
  Installiert: 2.02-2ubuntu8
  Installationskandidat: 2.02-2ubuntu8
  Versionstabelle:
 *** 2.02-2ubuntu8 500
        500 http://archive.ubuntu.com/ubuntu bionic/main amd64 Packages
        100 /var/lib/dpkg/status

Expected, install finishing.

Instead, installer crashed.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubiquity 18.04.14
ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
Uname: Linux 4.15.0-20-generic x86_64
ApportVersion: 2.20.9-0ubuntu7
Architecture: amd64
CasperVersion: 1.394
Date: Tue May 8 00:35:35 2018
InstallCmdLine: file=/cdrom/preseed/ubuntu.seed boot=casper initrd=/casper/initrd.lz quiet splash --- debian-installer/language=de keyboard-configuration/layoutcode?=de oem-config/enable=true
LiveMediaBuild: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
SourcePackage: grub-installer
UpgradeStatus: No upgrade log present (probably fresh install)

[Phillip Susi (psusi)]

That's strange. Grub complained that the disk does not have a bios boot partition, yet it does.