booting DragonFlyBSD with grub 2.02

[Saifi Khan]

Hi:

on a quad-core laptop, i want to dual boot DragonFlyBSD with
Gentoo Linux using grub 2.02 beta2.

DragonFlyBSD is currently installed on the second primary
partition with HAMMER as the default filesystem.

On running the command on Gentoo
# grub2-probe -d /dev/sda2 -t fs_uuid

a probe: error: unknown filesystem is returned.

The standard template that i follow to dual boot FreeBSD and
Gentoo using grub 2.02 is

edit /etc/grub.d/40_custom file

replace UUID with the UUID of the disk discovered with
grub2-probe -d /dev/sda2 -t fs_uuid

and make the following entry

menuentry 'FreeBSD' {
 insmod ufs2
 insmod bsd

search --fs-uuid --no-floppy --set=root UUID

kfreebsd /boot/kernel/kernel

kfreebsd_load /boot/device.hints
}

Now, with DragonFlyBSD what is the work around ?

Any pointers will be appreciated.


thanks
Saifi.