You can typically upgrade your Vagrant and VirtualBox installations without any problems. Occassionally you will run into problems though. If this does happen to you, you will want to remove all Vagrant and VirtualBox software, and then re-install it. Assuming you are using Configuration Management to provision your machines, the only thing you'll lose is your database.
You will need to delete files and applications as follows for OSX:
- ~/VirtualBox VMs
By the end of this lesson, you will be able to remove relevant Vagrant from your system to prepare yourself for a clean installation.