setboot

A simple Linux command line tool to modify the UEFI boot order on dual boot or multi boot systems so that an alternate operating system can be booted by default.

Installation

Prerequisites

The efibootmgr tool must be installed, which is ussed to query and modify the boot manager settings. On Ubuntu 20.04 this can be installed with:

$ apt install efibootmgr

Install the crystal compiler

Building

Check out the source from .

Build the binary with

$ cd setboot
$ shards build

Then copy to a directory in your PATH, eg.

$ cp bin/setboot /usr/local/bin

Usage

Basic usage is to run the command with a single argument to identify the name of the boot entry you want to move to the top of the boot order, eg.

$ setboot win

This will move the first active boot entry containing the string "win" to the start of the boot order. Entries are matching by searching for a case insensitive substring. Eg. "win" will match with the windows boot manager which is usually named "Windows Boot Manager".

Other options

• -n will set the boot entry for the next boot only
• -l will list the available boot entries in boot order
• -h displays help

Contributing

1. Fork it (https://github.com/your-github-user/setboot/fork)
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request

Contributors

• Rob David - creator and maintainer