you wrote: > When I run a 'sudo update-grub', it only finds the Debian kernel and > does not create any entry for my Ubuntu install. There's an option called "GRUB_DISABLE_OS_PROBER" in /etc/default/grub which may be relevant to your problem. See here: http://www.gnu.org/software/grub/manual/html_node/Simple-configuration.html https://www.google.com/search?q=GRUB_DISABLE_OS_PROBER I hope that helps. -- Ian Bruce