update-microcode-initrd command not found

Introduction

When you run more command in linux terminal / console, you get the following error message

update-microcode-initrd: command not found

or when using sudo you get the following error message

sudo: update-microcode-initrd: command not found

Solutions to update-microcode-initrd: command not found

How To Fix update-microcode-initrd: command not found in Ubuntu / Debian / Kali Linux / Raspbian

In Ubuntu update-microcode-initrd is provided by microcode-initrd package.

microcode-initrd is:

intel and amd64 microcode are generated together into an early, microcode-only, initrd. This initrd can then be loaded by grub on boot, for otherwise an initrd-less boot.

This package dynamically creates /boot/microcode.cpio whenever any microcode is updated.

To fix this problem, we can install more using the command below.

sudo apt-get -y install microcode-initrd

This command might take some time to finish depending on your machine internet connection.

You can also use apt command to install microcode-initrd.

sudo apt -y install microcode-initrd

Or if you have aptitude installed you can use the following command.

sudo aptitude install microcode-initrd

Summary

In this tutorial we learn how to fix update-microcode-initrd command not found error in Ubuntu / Debian / Kali Linux or Raspbian distribution.