I noticed this problem yesterday, 16 December 2021, but it is easy enough to overcome with an additional line added to /etc/default/grub GRUB_DISABLE_OS_PROBER=false
There are other methods as well, adding the boot stanza of a missing OS to /etc/grub.d/40_custom file. You need to update grub after either edit with sudo update-grub -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1955109 Title: boot menu not appearing after manual install of jellyfish daily build To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1955109/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
