It appears that the issue could be a corrupt VirtualBox.xml file. The one I had did not have anything in it. Removing or moving the file let it create a new one and let VirtualBox actually start.
Only problem is that none of the VM’s showed up. Was able to go to the ~/VirtualBox folder in a file browser and launch the vbox file to start the VM
Boot up the virtual machince
Insert the “Guest Additions CD Image…” from the Devices menu
In the VM, open up Files/Nautilus or Dolphin and find the CD. Open a terminal in the same directory and execute the auto run script
sudo sh autorun.sh
It should pop up another window to install the guest additions. After it is installed, you’ll need to reboot the VM for the new changes to take effect.
Install kernel headers, dkms, etc
dnf -y kernel-headers kernel-devel dkms gcc gcc-c++
Reboot the VM
Mount the Guest Additions by going to menu > Devices > Insert Guest Additions CD image… or you can hit “Host + D”.
The Host key is typically the Right Ctrl(On Windows) or CMD(On OS X) key.
Installing the Guest Additions
Via the GUI
Mount the Guest Additions from your file browser, and then launch the “VBoxLinuxAdditions.run”.
You will need root privileges, so either launch your file browser as root, or drag and drop the “VBoxLinuxAdditions.run”, into a root terminal and hit Enter.
Via Command Line
sudo mount /dev/cdrom /tmp/vbox
If you run into any errors, try ejecting, and remounting the Guest Additions cd.
1. Open a terminal and change to the root user
2. Then cd into the following directory
3. Install wget.
yum install wget
4. Download the repo files with wget.
5. Install the dependencies.
yum install binutils gcc make patch libgomp glibc-headers glibc-devel kernel-headers kernel-devel dkms
6. Update your computer.
7. Install VirtualBox.
yum install VirtualBox-4.2
8. Add the VirtualBox user to the vboxusers group
usermod -a -G vboxusers user_name
9. Reboot your computer.
10. Enjoy. If you run into problems try the following.
I have created a script that will do all this for you, download here. All you need to do is the following 3 commands.
chmod +x fedora-vb-installer.sh