I installed Ubuntu 8.10 on my Toshiba U100 which does not work too well with grub. Having installed 8.10 and replaced Grub with Lilo I ran update manager for all updates.
This failed when updating the kernel with the error ‘Could not find postinst hook script [update-grub]’.
To fix after running the update manager simply open a terminal and run the following commands.
First ‘trick’ the update script:
sudo ln -s /bin/true /sbin/update-grub
Then reinstall the failed kernel updates:
sudo apt-get upgrade
IMPORTANT: If like me you’re running Lilo then you must run lilo after any kernel upgrade:
lilo
This resolved it for me - took some head scratching so hope it helps someone else.
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