$ sudo dnf update $ sudo reboot (So any new installed kernel will be loaded) $ sudo dnf install gcc kernel-devel kernel-headers make bzip2 perl Go to the VirtualBox Menu > Devices > Insert Guest Additions CD image Automated: Press Run Manual: $ cd /run/media/$USER/VBox_GAs_*/ # Adjust path if needed $ sudo ./VBoxLinuxAdditions.run $ sudo reboot Verification: $ lsmod | grep vbox (Check to see if vboxguest is listed)

Installing the VirtualBox Guest Additions on Rocky Linux 9.3 dnf install epel-release dnf update --refresh dnf update kernel-* reboot (optional) dnf install dkms kernel-devel kernel-headers gcc make bzip2 perl elfutils-libelf-devel rpm -q kernel-devel uname -r Top menu: Devices -> Insert Guest Additions CD-Image Run (optional) cd /run/media/ ./VBoxLinuxAdditions.run