Likely the same as https://bugs.launchpad.net/ubuntu/+source/grub2-signed/+bug/1872212.
Note that: 1) drive uses gpt, not mbr 2) EFI partition is not logical partition AFAICS 3) there are no dump files as described in $ root parted /dev/nvme1n1 GNU Parted 3.3 Using /dev/nvme1n1 Welcome to GNU Parted! Type 'help' to view a list of commands. (parted) p Model: WDC WDS100T2B0C-00PXH0 (nvme) Disk /dev/nvme1n1: 1000GB Sector size (logical/physical): 512B/512B Partition Table: gpt Disk Flags: Number Start End Size File system Name Flags 1 1049kB 106MB 105MB fat32 EFI system partition boot, esp 2 106MB 123MB 16.8MB Microsoft reserved partition msftres 3 123MB 1000GB 1000GB ntfs Basic data partition msftdata 4 1000GB 1000GB 530MB ntfs hidden, diag ``` $ root parted /dev/nvme1n1 GNU Parted 3.3 Using /dev/nvme1n1 Welcome to GNU Parted! Type 'help' to view a list of commands. (parted) p Model: WDC WDS100T2B0C-00PXH0 (nvme) Disk /dev/nvme1n1: 1000GB Sector size (logical/physical): 512B/512B Partition Table: gpt Disk Flags: Number Start End Size File system Name Flags 1 1049kB 106MB 105MB fat32 EFI system partition boot, esp 2 106MB 123MB 16.8MB Microsoft reserved partition msftres 3 123MB 1000GB 1000GB ntfs Basic data partition msftdata 4 1000GB 1000GB 530MB ntfs hidden, diag ``` -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1904263 Title: Writing GRUB to boot device failed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1904263/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs