Yes, this is expected. os-prober has been disabled for security reasons
in 2.06.
grub2 (2.06-1) UNRELEASED; urgency=medium
* Boot menu entries for other operating systems are no longer generated by
default. To re-enable this, set GRUB_DISABLE_OS_PROBER=false in
/etc/default/grub.
-- Colin Watson <[email protected]> Wed, 18 Aug 2021 13:03:23 +0100
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https://bugs.launchpad.net/bugs/1955109
Title:
boot menu not appearing after manual install of jellyfish daily build
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