What happens when you update Linux kernel?

New Linux Kernel Versions Every update typically includes fixes to security loopholes, bug fixes to problems, better hardware compatibility, improved stability, more speed, and occasionally major updates also bring some new functions and features. Hence you will see several Linux Kernels all over the internet.

How do I boot into a new kernel?

Hold down SHIFT to display the menu during boot. In certain cases, pressing the ESC key may also display the menu. You should now see the the grub menu. Use the arrow keys to navigate to the advanced options and choose the kernal you want to boot.

What can I do with the Linux kernel?

The kernel has 4 jobs:

1. Memory management: Keep track of how much memory is used to store what, and where.
2. Process management: Determine which processes can use the central processing unit (CPU), when, and for how long.
3. Device drivers: Act as mediator/interpreter between the hardware and processes.

Should I update latest kernel?

Not only do kernel updates bring with it security fixes, but it can fix other issues that could possibly make the system crash through regular use. For most normal consumer-type users, updating your kernel outweighs those issues by a lot.

Should I upgrade to latest Linux kernel?

The Linux Kernel is extremely stable. There is very little reason to update your kernel for stability’s sake. Yes, there are always ‘edge cases’ that affect a very tiny percentage of servers. If your servers are stable, then a kernel update is more likely to introduce new issues, making things less stable, not more.

How do I switch between Linux kernels?

How to switch kernels on Arch Linux

1. Step 1: Install the kernel of your choice. You can use the pacman command to install the Linux kernel of your choice.
2. Step 2: Tweak the grub configuration file to add more kernel options.
3. Step 3: Re-generate the GRUB configuration file.

How do I add a new kernel to grub?

To manually set a specific kernel to boot, the user must edit the /etc/default/grub file as the superuser/root. The line to edit is the GRUB_DEFAULT=0. After setting this line to the desired setting (see below), save the file and update the GRUB 2 configuration file using the following command: sudo update-grub.