Later I checked what was the VM current Linux kernel version with the command “ uname -r”: uname -r There was nothing to update here because I had already updated the package list before trying to install the VirtualBox Guest Additions, but I have included the step anyway because you may need to execute this command before installing the package containing the current Linux kernel headers. The solution was therefore to install the missing target kernel headers.įirst, I updated the list of packages using the “ sudo yum update” command. I did it and the VirtualBox Guest Additions installation started in a new shell window: Installation of VirtualBox Guest Additions startsīut after a few seconds I get the dreaded “Kernel headers not found error for target kernel” error message: Kernel headers not found error

I clicked the “Run” button and I was asked by the system to authenticate to execute the software as super user: Authentication required Oracle Linux recognised the CD and asked me the permission to start the software it contained: Start software Devices > Insert Guest Additions CD image I was already connected to the VM as oracle so I selected the “Devices > Insert Guest Additions CD image…” VirtualBox menu. So let’s see how to do it with an Oracle Linux 8.5 guest VM. It is therefore a good idea to install them after a fresh installation of an operating system in a VM. VirtualBox Guest Additions are not mandatory in order to use a Virtual Machine but they allow a smooth integration of the mouse, keyboard and to copy/paste text for instance between the host and guest systems.

We are now going to see how to install the VirtualBox Guest Additions in order to allow a smooth integration with the host computer. In the previous posts we saw how to install Oracle Linux 8.5 in a VirtualBox VM and the end user initial setup after the first connection.

Virtualbox guest additions linux