/etc/grub.d/40_custom

#!/bin/sh
exec tail -n +3 $0
# This file provides an easy way to add custom menu entries.  Simply type the
# menu entries you want to add after this comment.  Be careful not to change
# the 'exec tail' line above.
menuentry "NuTyX avec kernel experimental sur /dev/sda4" {
  set root=(hd0,msdos4)
  linux /home/chris/linux-4.2.5/arch/x86/boot/bzImage root=/dev/sda4 ro quiet
}