We can use two or more operating systems at the same time through a Virtual machine without using a physical machine. But some users encounter an VERR_SUP_VP_THREAD ...

If you encounter VirtualBox Error VERR_ALREADY_EXISTS, you should reboot the host computer before installing a fresh extension or a VM. Your system is most likely ...

I should preface this by saying that I've been under a rock when it comes to the progress in desktop virtualization software on OS X for the last few years. When I got my MacBook back in 2007, I knew ...