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 run this XServe headless. I also have VirtualBox on it. To start a VM via ssh I need to first use VNC and login to the account that has permissions for VB. Then either via the Terminal application ...