Now, you can mount the Guest Additions ISO and run the installer in two ways: Install Guest Additions via a GUI # export KERN_DIR=/usr/src/kernels/$(uname -r)ĥ. Next, set the KERN_DIR environment variable to kernel source code directory ( /usr/src/kernels/$(uname -r)) and export it at the same time as shown. # dnf install make gcc kernel-headers kernel-devel perl dkms bzip2Ĥ. # yum install make gcc kernel-headers kernel-devel perl dkms bzip2 Once update process completes, install all kernel headers, developer tools and other related packages that are required for installing the guest additions from source as shown. Once the upgrade process is done, reboot your system to complete the upgrade process and start using the new kernel. Next, update each package on your guest system including the kernel to the latest version that is both available and resolvable, as shown.

First start by enabling the EPEL repository on your CentOS/RHEL guest operating system to install some required packages needed for the installation process as shown. When you have VirtualBox running, locate “File” in the top menu and click on it, then select “Import Appliance.” VirtualBox refers to virtual machines as appliances.1. To make this process seamless, you can simply export the OVA file from the virtual machine you want to clone and import it to your new setup.Īlso read: How to Install macOS in VirtualBox Importing an OVA Ideally, you would have to go through the entire process of installing the OS on your second virtual machine through the ISO file and manually copy all the settings. Or you may even want to transfer it to another PC. Let’s say you set up a virtual machine on your PC using VMware but now you want to run it through VirtualBox. To put it simply, these files store the configuration details required to set up virtual machines through software like VirtualBox, VMware, Microsoft System Centre Virtual Machine Manager, and Amazon’s Elastic Compute Cloud (Amazon EC2). All this data is saved in the Open Virtualization Format, which is a standard format used to package and distribute software run in virtual machines. It includes a descriptor file (.OVF), optional manifest (.MF), certificate files, and other related files. Also read: How to Test Various Linux Distros Online What Is an OVA FileĪn OVA file (Open Virtual Appliances) is a package that contains files used to describe a virtual machine.

What is virtualbox ose