How to Install Kernel 5.15 from Source on Debian Bullseye

September 29, 2021 | By the+gnu+linux+evangelist | Filed in: Tutorial.

GNU/Linux Debian Bullseye Building Kernel 5.15 from Source Code Guide

Hi! The Tutorial Shows You Step-by-step How to Build and Install a New Custom Kernel 5.15 from Source Code in Debian Bullseye 11.x GNU/Linux.

Especially relevant: this Debian Bullseye Kernel 5.15 Setup make use of the latest Linux Kernel Source Code.

Again this tutorial make it the Easy Way and so is intended especially for Beginners.

Possibly, a very good Alternative for Desktops is represented by the ready-made XanMod and Liquorix Kernel Setup.

Important to know how this Setup does Not change your existing System and so in any case you will be able to startup with the current Kernel from the GRUB Splash Screen.

For further advanced Kernel Configuration instructions you may see the Linux Kernel Documentation.

Finally, for a Non Bootable System before see How to chroot on Debian GNU/Linux Tutorial.

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  1. 1. Installing Requirements

    Open a Terminal Shell emulator window
    (Press “Enter” to Execute Commands)

     - Open Terminal
    First, possibly Upgrade your Debian System with:
    sudo apt update && sudo apt upgrade
    And when a New Kernel is installed, to Reboot run
    sudo reboot now
    Then play:
    sudo apt install build-essential libncurses5-dev fakeroot xz-utils libelf-dev
    Authenticate with the User Admin Pass.
    If Got “User is Not in Sudoers file” then see: How to Enable sudo.

    How-to Quick-Start with Command Line on Debian GNU/Linux

    Command Line Debian Linux QuickStart Guide
  2. 2. Making Target Directory

    Now make the Target Folder
    With:

    mkdir ~/kernel

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