sudo grub2-mkconfig -o /etc/grub2.cfg
[sudo] password for fedora: 
Sorry, try again.
[sudo] password for fedora: 
Generating grub configuration file ...
Found Windows Boot Manager on /dev/sdb4@/efi/Microsoft/Boot/bootmgfw.efi
Found MX 25.1 Infinity (25.1) on /dev/sdb6
Found MX 25.1 Infinity (25.1) on /dev/sdc1
Adding boot menu entry for UEFI Firmware Settings ...
done
fedora@ikjinan:~$ sudo grub2-mkconfig -o /etc/grub2.cfg
[sudo] password for fedora: 
Generating grub configuration file ...
Found Windows Boot Manager on /dev/sdb4@/efi/Microsoft/Boot/bootmgfw.efi
Found MX 25.1 Infinity (25.1) on /dev/sdb6
Found MX 25.1 Infinity (25.1) on /dev/sdc1
Found MX 25.1 Infinity (25.1) on /dev/sdd3
Adding boot menu entry for UEFI Firmware Settings ...
done