cat /boot/grub/grub.cfg
menuentry 'gentoo' {
    set root='hd0,msdos1'
    echo 'loading linux...'
    linux /vmlinuz-4.11.4-gentoo root=PARTUUID=097cfb03-04
}

menuentry 'crux' {
    set root='hd0,msdos1'
    echo 'loading linux...'
    linux /vmlinuz-4.9.6-crux root=PARTUUID=097cfb03-02
}