My guess is this is a regression in grub-mkconfig between 2.00-19ubuntu2.1 and 2.02~beta2-9. Neither of the situations in Phillip Susi's comment 64 applies to my case. Maybe there are several different possible causes for Grub2 not booting after an upgrade, and I'm not yet convinced these are distinct bugs.
In the case of this Lenovo laptop, there's only one drive, no EFI, but grub is installed to a partition. It came with Windows on 3 partitions, so I installed Lubuntu 13.04 to a logical partition, sda5; I later enlarged and moved that partition (Partition table entries are not in disk order) and upgraded to saucy (the only change I made to /etc/default/grub was to comment out GRUB_CMDLINE_LINUX=""). Then today I did the dist-upgrade through the Software Updater and there were no visible errors, but on reboot I got the grub rescue prompt with error "symbol 'grub_term_highlight_color' not found" and the same error in response to "insmod linux". The following warning was in the dist- upgrade log: 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.. Installation finished. No error reported. parted -l output for the drive: Model: ATA ST9250411AS (scsi) Disk /dev/sda: 250GB Sector size (logical/physical): 512B/512B Partition Table: msdos Number Start End Size Type File system Flags 1 1049kB 1259MB 1258MB primary ntfs boot 2 1259MB 91.3GB 90.0GB primary ntfs 4 91.3GB 194GB 103GB extended 5 91.3GB 111GB 20.0GB logical ext4 6 111GB 191GB 80.0GB logical ext4 7 191GB 194GB 2999MB logical 3 239GB 250GB 11.0GB primary ntfs chrooted to sda5 to run debconf-show grub-pc: grub-pc/timeout: 3 grub2/device_map_regenerated: grub-pc/disk_description: grub-pc/install_devices_failed_upgrade: true * grub-pc/install_devices: /dev/disk/by-id/ata-ST9250411AS_5VG7HNEE-part5 grub2/linux_cmdline_default: splash quiet grub-pc/hidden_timeout: false grub-pc/mixed_legacy_and_grub2: true grub-pc/install_devices_disks_changed: grub2/kfreebsd_cmdline_default: quiet splash grub-pc/chainload_from_menu.lst: true grub-pc/postrm_purge_boot_grub: false grub-pc/partition_description: grub2/kfreebsd_cmdline: grub-pc/install_devices_empty: false grub-pc/kopt_extracted: false grub-pc/install_devices_failed: false grub2/linux_cmdline: I booted from USB with 13.04 and did grub-install with "--root- directory=/mnt/sda5" as in Sylvain's helpful comment 79 and could then boot from sda (sometimes sda and sdb are reversed booting from USB). However, on running dpkg-reconfigure grub-pc from within 14.04 as Phillip suggested with the same settings (install to sda5), the problem re-emerged on next boot. A grub-install using 13.10 also seemed to fix it. After a grub-install in 14.04, I can no longer reproduce the grub failure, and am not sure which of these conditions are relevant. It could be that steps to reproduce are: install grub 2.00 only to an ext4 partition; run the 2.02 update-grub on it and reboot. What with this and niggles like losing lxkeymap and clipit (and synaptic listing all origins) "Trusty" isn't living up to its name for me yet. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1289977 Title: Ubuntu 14.04 Update breaks grub, resulting in "error: symbol 'grub_term_highlight_color' not found" To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-release-upgrader/+bug/1289977/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
