Followed these steps from mitchelln and http://karuppuswamy.com/wordpress/2010/06/02/how-to-chroot-to-ubuntu- using-live-cd-to-fix-grub-rescue-prompt/ to repair my natty RAID1 upgrade:
# Boot from LiveCD # Made a directory to mount the root filesystem to sudo mkdir /media/internal # -- Going to chroot into our RAID1 system # Notice the following is not the whole RAID drive nor the swap, just where the root filesystem exists (specific to my system) sudo mount /dev/mapper/[partition where the root filesystem is on the RAID] /media/internal # i.e. sudo mount /dev/mapper/isw_[some-id]_RAID1p5 /media/internal sudo mount --bind /dev /media/internal/dev sudo mount --bind /proc /media/internal/proc sudo mount --bind /sys /media/internal/sys sudo chroot /media/internal # May not be there apt-get purge dmraid apt-get install dmraid # I believe here it is the whole RAID disk, not just the partition grub-install /dev/mapper/isw_[some-id]_RAID1 update-grub2 reboot That was it. Unfortunately, I do have an error that appears on the splash screen relating to skip the mounting process or the similar, but once skipped my login screen came up and system is operational. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/756564 Title: After Maverick to Natty upgrade, grub won't boot and displays "symbol not found : 'grub_env_export'" -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
