Thank you very much for answer Mate.
Canonical company can work an development of GRUB and repair bug on GRUB.
GRUB need add fully support for F2FS and for LUKS2.
Can you please contact managers of Canonical form development of GRUB?
Not exist any barrier for GRUB development for Canonical!
Or y
The short answer is that we do not support an F2FS /boot filesystem and
support is not built into signed monolithic GRUB for that reason.
If you need to have an F2FS root partition, you can use a separate /boot
with a supported file system as you suggested.
If you insist on having F2FS as /boot,
