GNU/Linux Ubuntu 24.04 Fixing GRUB Guide
How to Reinstall/Fix GRUB 2 on Ubuntu 24.04 LTS GNU/Linux – Step by step Tutorial.
GNU GRUB for Ubuntu 24.04 is a powerful Boot Loader that can load a wide variety of Free Operating Systems, as well as proprietary OSes with Chain-loading.
A Boot Loader is responsible for loading and transferring control to a Kernel OS Software (such as Linux or GNU Mach).
This setup is necessary to fix OS boot issues after an unsuccessful installation or for a GNU+Linux/Windows Dual Boot system.
Finally, this guide is valid for all Ubuntu-based Distros including:
- Linux Mint
 - Zorin OS
 - Lubuntu
 - Elementary OS
 - KDE Neon
 - Pop_OS!
 - Xubuntu
 - Linux Lite
 - Bodhi
 - Puppy
 - Kubuntu
 - LXLE
 - Trisquel
 - Voyager Ubuntu
 - feren OS
 - Peppermint
 - Linux Ultimate Edition
 
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1. Launching Terminal
How to QuickStart with Command Line on Ubuntu
Bash Shell Ubuntu QuickStart Guide