Install VirtualBox Guest Additions on Rocky Linux 9

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Follow through this tutorial to learn how to install VirtualBox guest additions on Rocky Linux 9. We are installing the VirtualBox Guest additions on Rocky Linux 9 Desktop.

You can check;

Install Rocky Linux 9 on VirtualBox

Install VirtualBox Guest Additions on Rocky Linux 9

The Guest Additions offer the following features:

  • Mouse pointer integration
  • Shared folders for easy sharing of files between the host and the guest
  • Ensures better and accelerated video performance.
  • Seamless windows integration
  • Generic host/guest communication channels that enables you to control and manage guest execution.
  • Provides Host-Guest time synchronization.
  • Shared clipboard between host and guest vm.
  • Automated logins.

Read more on VirtualBox Guest addition features on the VirtualBox User Manual.

Install Kernel Headers and Required Build Tools

After mounting ISO file, be sure to install the kernel headers and required build tools. Some of the required tools are available on the EPEL repos, hence begin by installing the EPEL repos on Rocky Linux 9

dnf install epel-release -y

Next, install the kernel headers and build tools by executing the command below;

dnf update --refresh -y
dnf install dkms kernel-devel kernel-headers gcc make bzip2 perl elfutils-libelf-devel

Next, ensure that the version of kernel-devel installed does match the version of your running kernel. You can verify by running the commands below.

rpm -q kernel-develuname -r
compare kernel version numbers

If they do not match, update your kernel by running;

dnf update kernel-*

Next, reboot the system and verify the kernel versions again.

Install VirtualBox Guest Additions

VirtualBox guest additions can be installed via the command line or via GUI.

VirtualBox guest additions on Rocky Linux 9 via Command Line

Check the current version of your VirtualBox on your host;

VBoxManage --version

Sample output;


Download VirtualBox Guest Additions ISO file of the same version as your installed VirtualBox.

wget -P /tmp

Mount the guest addition iso under the /run/media/ directory.

mount /tmp/VBoxGuestAdditions_6.1.34.iso /run/media/

Next, navigate to the mount directory and execute the Linux guest addition installer

cd /run/media/

Or simply run;


Sample installation output;

Verifying archive integrity... All good.
Uncompressing VirtualBox 6.1.34 Guest Additions for Linux........
VirtualBox Guest Additions installer
Copying additional installer modules ...
Installing additional modules ...
VirtualBox Guest Additions: Starting.
VirtualBox Guest Additions: Building the VirtualBox Guest Additions kernel 
modules.  This may take a while.
VirtualBox Guest Additions: To build modules for other installed kernels, run
VirtualBox Guest Additions:   /sbin/rcvboxadd quicksetup 
VirtualBox Guest Additions: or
VirtualBox Guest Additions:   /sbin/rcvboxadd quicksetup all
VirtualBox Guest Additions: Building the modules for kernel 

Reboot Rocky Linux 9

Once the installation completes, reboot the system to effect the changes.

When the system boots, you should be on full-screen view.

If the system do not auto-resize the screen, toggle it on the VM menu by clicking View > Auto-resize Guest Display.

And there you go.

Install VirtualBox Guest Additions on Rocky Linux 9

Congratulations. You have successfully set the Rocky Linux 9 full-screen display on VirtualBox.

You can now enable other features such as shared clipboard, drag and drop between the host and virtual machine.

That concludes our guide on how to install VirtualBox Guest Additions.

Other Tutorials

Install VirtualBox Guest Additions on Kali Linux 2021.3

Install VirtualBox Guest Additions on Debian 11

Install VirtualBox Guest Additions on Rocky Linux 8


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I am the Co-founder of, Linux and the whole FOSS enthusiast, Linux System Admin and a Blue Teamer who loves to share technological tips and hacks with others as a way of sharing knowledge as: "In vain have you acquired knowledge if you have not imparted it to others".

1 thought on “Install VirtualBox Guest Additions on Rocky Linux 9”

  1. This does not work with VB 6.0.X or 7.0.6. It should but stdargs.h not found error keeps interfering. Mine is new install of Rocky, not an upgrade of VB.
    Good article, but didn’t work for me. Thank you for you efforts.


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