I haven't used Mandrake derivatives since it mangled my hard-disk on install many years ago and caused me to lose 4 systems. So ....
In grub2 that functionality is provided by an external script "os-prober" (try "which os-prober" as root/sudo). Grub2 will use it if present (early Fedora grub2 didn't have it for example), and provided the option isn't disabled in /etc/default/grub.
If all that is in place, something like "grub-mkconfig -o /boot/grub/grub.cfg" will rebuild the config grub2 uses for the boot menu. Note that it might be "grub2-mkconfig", and the target may be /boot/grub2/ - like I said, I've never used Moondrake.
|