To install Fedora on Oracle VM VirtualBox, download the ISO File of Fedora, Install the VirtualBox, Set up VM, Boot with and Install Fedora.

If you want install Oracle Linux on Oracle VirtualBox, you can follow this guide to download the VM tool, ISO file, and create the VM.

If you find yourself with a mismatched VirtualBox and VirtualBox Extension Pack release, such that VirtualBox itself cannot resolve, Jack Wallen shows you how to fix this from the command line.

After entering beta roughly three months ago, Oracle’s VM VirtualBox 5.0 virtualization software is now generally available, offering faster performance and better security.

Oracle's VirtualBox, a free and open-source virtualization app, has long let you run almost any x86 operating system virtually on compatible host machines with Linux, macOS, or Windows.