Updated Grub Package

You should run it every time. For two reasons:

  1. You never know when backwards incompatible changes will be introduced
  2. If you don’t, you won’t be getting all of the updates including many of the security related updates.

Sure. As long as you understand the correct options to pass to grub-install, you can make a hook for a given installation. In most(but not all) cases, it is sufficient to run grub-install --no-nvram on UEFI installs.

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