Having been very happy with 14.04 I recently installed 16.04 in a new partition (/dev/sd9). Both share /home (/dev/sda6) in a separate partition so I will not be losing my data if I delete 14.04 partition (/dev/sda5) . However will Grub2 be OK with this and will I be able to continue to boot 16.04 successfully.
Here's the partitioning of my SSD (Yes W10 is there having been on my ZenBook when I bought it). and here's the Grub2 list at boot.