Public bug reported: I'm upgrading Ubuntu 22.04 to 24.04 and suddenly grub-pc fails after running grub-install. I tried reisntalling it to find more details and here's the output I've got:
# apt reinstall grub-pc Reading package lists... Done Building dependency tree... Done Reading state information... Done 0 upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 0 not upgraded. Need to get 137 kB of archives. After this operation, 0 B of additional disk space will be used. Get:1 http://mirror.yandex.ru/ubuntu noble-updates/main amd64 grub-pc amd64 2.12-1ubuntu7.3 [137 kB] Fetched 137 kB in 0s (1252 kB/s) Preconfiguring packages ... (Reading database ... 236663 files and directories currently installed.) Preparing to unpack .../grub-pc_2.12-1ubuntu7.3_amd64.deb ... Unpacking grub-pc (2.12-1ubuntu7.3) over (2.12-1ubuntu7.3) ... Setting up grub-pc (2.12-1ubuntu7.3) ... grub-pc: Running grub-install ... Installing for i386-pc platform. grub-install: warning: File system `ext2' doesn't support embedding. grub-install: warning: Embedding is not possible. GRUB can only be installed in this setup by using blocklists. However, blocklists are UNRELIABLE and their use is discouraged.. grub-install: error: diskfilter writes are not supported. grub-install failure for /dev/md127 Sourcing file `/etc/default/grub' Generating grub configuration file ... Found linux image: /boot/vmlinuz-6.8.0-71-generic Found initrd image: /boot/initrd.img-6.8.0-71-generic Warning: os-prober will not be executed to detect other bootable partitions. Systems on them will not be added to the GRUB boot configuration. Check GRUB_DISABLE_OS_PROBER documentation entry. Adding boot menu entry for UEFI Firmware Settings ... done Processing triggers for man-db (2.12.0-4build2) ... Please note that Ubuntu 20.04 and 22.04 had no issues with this software raid, and I've successfully upgraded 20.04 to 22.04 few hours ago. https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/2060695 seems to be about the same issue, but it says the fix was released, while crearly it's not fixed yet. ProblemType: Bug DistroRelease: Ubuntu 24.04 Package: grub-pc 2.12-1ubuntu7.3 ProcVersionSignature: Ubuntu 5.15.0-151.161-generic 5.15.184 Uname: Linux 5.15.0-151-generic x86_64 NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair ApportVersion: 2.28.1-0ubuntu3.8 Architecture: amd64 CasperMD5CheckMismatches: ./boot/grub/efi.img CasperMD5CheckResult: fail Date: Thu Jul 31 05:45:49 2025 InstallationDate: Installed on 2021-01-21 (1651 days ago) InstallationMedia: Ubuntu-Server 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731) RebootRequiredPkgs: Error: path contained symlinks. SourcePackage: grub2 UpgradeStatus: Upgraded to noble on 2025-07-30 (0 days ago) ** Affects: grub2 (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug noble -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2119155 Title: grub-pc cannot install on software raid1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/2119155/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
