In jessie(debian) I installed kernel 4.9 and I removed kernel 3.16 but grub always boot on 3.16

[Gérard ROBIN]

Hello,
jessie was installed on my old box Assus A7N8X with the kernel 
linux-image-3.16.0-4-686-pae. I installed the kernel 
linux-image-4.9.0-4-686-pae and when I booted the box, grub did not display 
the kernel 4.9 it only showed kernel 3.16. I hit the c key and the
command exit and after that I saw the kernel 4.9 and I booted the box 
successfully with the kernel 4.9. I ran again update-grub but it was always 
the same thing at startup. Finally I removed the kernel 3.16 and then I did 
update-grub. And surprise! grub always displays kernel 3.16 and not kernel 
4.9, but fortunately "c and exit" work.

I put the result of bootinfoscript in attached document.

There are to hard drives in this machine : sda and sdb
grub on sda, kernel 4.9 and stretch (now)
jessie on sdb, kernel 3.16

Can anyone help me make grub work properly ?


TIA
-- 
Gerard
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RESULTS.txt
Description: Text document