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Do I Need to Reboot After Kernel Update?

Sophia Al-Mansoor • • 6 min read
Do I Need to Reboot After Kernel Update?
1. If you want to use the advantage of new kernel and its security fixes, you must to reboot. But it's not good idea to keep running your older kernel and updating your system, as it won't be saved on your system. It's better to reboot ASAP and after that only updating should be perform.

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Keeping this in view, does Linux kernel update require reboot?

With versions of Linux before 4.0, when the kernel is updated via a patch, the system needs to reboot. This is why it's important to install the patch as soon as possible. Unlike other operating systems, Linux is able to update many different parts of the system without a reboot, but the kernel is different.

Subsequently, question is, how does Linux update without reboot? Live kernel patching is the process of applying security patches to a running Linux kernel without the need for a system reboot. The implementation for Linux is named livepatch. The process of patching a live kernel is a fairly complex process. It can be compared to an open heart surgery.

Secondly, do you need to reboot after yum update?

If kernel has updated, yes it is a good idea to reboot because new kernel will be used only after reboot. other packages will be updated in place, no need to reboot.

How do I reload kernel without rebooting?

There is no way to use the updated kernel without restarting your system. Until you restart, you will still be using the old kernel you booted into when you started up your computer prior to updating your kernel.

Related Question Answers

When should I update my Linux kernel?

On the other hand, if you have a modern PC and you are on the internet most of the time, and security fixes are utmost important to you, then you should probably upgrade to the latest kernel. It may make your PC faster, safer, and have better compatibility with your Linux OS.

How do I update my kernel?

Option A: Use the System Update Process
  1. Step 1: Check Your Current Kernel Version. At a terminal window, type: uname –sr.
  2. Step 2: Update the Repositories. At a terminal, type: sudo apt-get update.
  3. Step 3: Run the upgrade. While still in the terminal, type: sudo apt-get dist-upgrade.
Sophia Al-Mansoor
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Sophia Al-Mansoor

Sophia analyzes international trade, startup ecosystems, retail transformation, and supply chain logistics for modern digital publications.