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

[Mike Gilbert]

On Fri, Jul 7, 2017 at 8:28 AM, Harry Putnam  wrote:
> Googling to find out if it is necessary to reinstall the bootloader
> and update grub.cfg afer update world installed grub2 update.
>
> I was buried in directions to install grub2, or move from old grub to
> grub2.  But not what I wanted to know short of reading all hits word
> for word.
>
> So, (sniveling over), do I need to reinstall the boot loader and
> update grub.cfg like when it was newly installed?

Good question(s).

You don't really *need* to reinstall; the old version will continue to
run/boot indefinitely.

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.

You only need to re-generate grub.cfg if you make a change to your
kernel/initramfs images in /boot; your existing grub.cfg file will
continue to work otherwise.

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

[Harry Putnam]

Googling to find out if it is necessary to reinstall the bootloader
and update grub.cfg afer update world installed grub2 update.

I was buried in directions to install grub2, or move from old grub to
grub2.  But not what I wanted to know short of reading all hits word
for word.

So, (sniveling over), do I need to reinstall the boot loader and
update grub.cfg like when it was newly installed?