fakegrub

Generate a fake grub.cfg with minimal content to be picked up by a real GRUB's osprober. Useful for passing kernel arguments to the OS in a multiboot environment when the real system GRUB is managed by other OS, and installing GRUB just to manage the configs is undesirable.

Requirements

• bash
• cat
• xargs
• perl

Installation

Currently only source installation method is available.

More install options are planned in the future.

From source

1. Clone the repo.

2. Set system-wide fakegrub settings.

   $ bin/fakegrub-default-settings | sudo tee /etc/fakegrub
   $ sudo edit /etc/fakegrub

Usage

To update grub.cfg using the system-wide fakegrub settings, use this:

Warning: this command will try to write to /boot/grub/grub.cfg by default. Although it has a built-in safety-check to prevent overwriting the configuration when it's not generated by fakegrub, be careful when using it on a live system. It's a good idea to backup /boot/grub/grub.cfg before running the command below if you're not yet comfortable with fakegrub.

$ sudo bin/update-fakegrub

To just print the GRUB config generated with system fakegrub settings use fakegrub-mkconfig (similar to grub-mkconfig, but doesn't require root):

$ bin/fakegrub-mkconfig

You can also invoke config generator directly passing custom settings:

$ bin/fakegrub-generate "My menuentry" "root=/dev/vg/lvroot"