update grub2

[Michael Schwendt]

On Sun, 18 May 2014 14:57:14 +0200, Patrick Dupre wrote:

> Hello,
> 
> After an update of teh kernel. the file:
> /boot/grub2/grub.cfg is updated.
> However thsi file is not update properly.

How? In which way is it not updated "properly"?

Prior to installing a new kernel, you could save a copy of grub.cfg,
install a new kernel package, and then run diff on the old and new
grub.cfg. What do you get?

> If I run:
>  grub2-mkconfig -o /boot/grub2/grub.cfg
> then the file is OK.

Define "OK". 

grub2-mkconfig rewrites grub.cfg from scratch and under consideration
of template files, such as those in /etc/grub.d, and add-on tools such
as os-prober.

On the contrary, grubby (as run via the kernel packages) only inserts
a new boot entry into the existing file. It does not recreate the file
completely.

> Somebody can tell me what is going on?

You haven't given enough details.