Re: [gentoo-user] Re: redoing grub-2 after emerge updates it

[Mick]

On Friday 07 Jul 2017 11:49:11 Harry Putnam wrote:
> Mike Gilbert <floppym@g.o> writes:
>
> [...]
>
> > If you want to use the new version to boot your system, you should
> > re-run grub-install, which will copy the modules to /boot/grub and
> > will install the core image to your MBR or EFI system partition.
>
> Thanks for the info.
>
> I don't know what the update was but since its easy enough to run
> `grub-install /dev/sda' and I guess also run
> grub-mkconfig -o /boot/grub/grub.cfg
>
> Anyway, I did those two things... just being on the safe side.

As has already stated you could stay put with your old version, provided you 
have no specific reason to stop using it.  GRUB2 can be installed and left 
unused.  I guess from a usability perspective as long as you have no need to 
employ GRUB2's new functionality/features, main difference between GRUB legacy 
and GRUB2 can be boiled down to what you need to do each time you install a 
new kernel.

With GRUB legacy you edit on your own your /boot/grub/grub.conf to add the 
name and version of your newly installed kernel and initrd (if you use one of 
these).

With GRUB2 you run a single command line and leave it to GRUB2's scripts to 
scan your boot and other drives, discover their contents and auto-complete 
/boot/grub/grub.cfg.
-- 
Regards,
Mick