$schemamarkup = get_post_meta(get_the_ID(), 'schemamarkup', true); if(!empty($schemamarkup)) { echo $schemamarkup; }

How to Install Kernel 6.5 from Source on CentOS 9

August 31, 2023 | By the+gnu+linux+evangelist.

Installing

  1. 5. Configuring Kernel

    So now to Configure CentOS Linux Custom Kernel
    First, access the Kernel Source with:

    cd linux*

    Then copy the current Configuration File into the New Kernel Source:

    sudo find /boot/ \( -iname "*config*" -a -iname "*`uname -r`*" \) -exec cp -i -t ./ {} \;
    mv *`uname -r`* .config

    This mystics because the default Configuration File may have a variable composition including “config” and the Kernel Version.
    In case of a Chrooted System instead you may look up the available Kernels with:

    ls /boot | grep config

    The grep Command refine the output List showing only the entries Matching the Keyword.
    Again fix the Configuration File editing it with nano and commenting out like:

    sudo nano .config

    Use Ctrl+w to search for “CONFIG_SYSTEM_TRUSTED_KEYS” on nano.
    And comment out the Line like:

    #CONFIG_SYSTEM_TRUSTED_KEYS="certs/rhel.pem"

    Ctrl+x to Save & Exit.
    Else to make a Custom one then reconfigure the Kernel (Only for advanced Users) with:

    sudo make menuconfig

    For instructions see: How to Configure a Build Kernel.

  2. 6. Building Kernel

    Next to Build CentOS Custom Linux Kernel
    Make it with:

    sudo make clean

    And then:

    sudo make rpm-pkg

    When prompted if uncertain then simply follow to hit until the end.

    Build Kernel CentOS 9 Guide - Prompt

    Then think to other task to follow because the process will take about a couple of Hours…
    Last, to check the builded Images play:

    sudo ls /root/rpmbuild/RPMS/x86_64/ | grep kernel
    Build Kernel CentOS 9 Guide - Builded Images
  3. 7. Installing Kernel

    Finally, to Install CentOS Linux Custom Kernel
    Simply play:

    sudo su -c "dnf in /root/rpmbuild/RPMS/x86_64/kernel*.rpm"

    And this setup includes also the Custom Kernel Headers that you don’t will find online. :)

    custom kernel installation

    And finally reboot with:

    sudo reboot now

    Finally, you should boot into your barely new CentOS Linux Kernel :)
    To check it run:

    uname -r

    And in case of Issue you still can choose the previous one on the GRUB Splash Screen!

  4. 8. Updating Firmware

    How to Update Linux Devices Firmware on GNU/Linux

    Updating Firmware Guide

    Especially relevant: this setup is optional and may be required only to make use of some New Device Drivers not available in your current Firmware.

Contents


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