$ parted -l | grep 240
$ sudo su
export DISK=/dev/sdd &&\
mount "${DISK}7" /mnt &&\
mount "${DISK}1" /mnt/boot &&\
mount --bind /dev /mnt/dev &&\
mount --bind /dev/pts /mnt/dev/pts &&\
mount --bind /proc /mnt/proc &&\
mount --bind /sys /mnt/sys &&\
mount --bind /etc/resolv.conf /mnt/etc/resolv.conf &&\
chroot /mnt
update-grub2
ou
grub-install /dev/sdd
fixboot, fix boot, fix kernel, fixar kernel, fixar boot