Fixing grub errors after Ubuntu distribution upgrade
After running an Ubuntu distribution upgrade on a machine where the primary
boot disk is not /dev/sda, but let's say /dev/sdb, you may
experience the following grub error:
error: symbol not found: 'grub_env_export'
This happens because the grub-update is apparently run on the first disk by
default. You'll need to reinstall grub using the correct partition by booting from a live disk, as explained in this post. In the live system, fire up a terminal and (assuming your desired boot partition is on /dev/sdb1) do
sudo mount /dev/sdb1 /mnt/sdb1
sudo mount -o bind /dev /mnt/sdb1/dev
sudo mount -o bind /sys /mnt/sdb1/sys
sudo mount -o bind /proc /mnt/sdb1/proc
sudo chroot /mnt/sdb1
This will make the boot partition your current root directory tree. Then reinstall grub there:
grub-install /dev/sdb
update-grub
Reboot the machine, and hope for the best - it worked for me when upgrading from Maverick to Natty.
Back for download: Tutorial on opening an Acer Travelmate 613
Due to growing requests, I just put an old D.I.Y. tutorial on opening an Acer Travelmate 613 back online. The tutorial can be found here. It is written in German, but has several photos in it.
Anyway, please note before following the tutorial: I opened such a device many years ago for disconnecting the internal battery, after the notebook suddenly had a bios password enabled. While it helped resetting the bios password, it didn't solve the problem ultimately: The TM 613 had a security chipcard reader which was also randomly enabled and naturally didn't respond to the empty factory cards I had. So I ended up sending the device to the Acer people, who fixed the problem fast and for free.