Then in virtual box right click your virtual machine, select close, and power off. After that completes, double click on the virtual machine to start it back up. It may be helpful to check your router at this point just to make sure that your virtual machine picked up the right address. Navigate to that IP address port 8123 just as you would with any home assistant installation, then go to hass.io and install the samba addon. If you previously had the samba addon setup in home assistant you should use the same login and password that you did before, otherwise windows will get confused and send the wrong credentials. Click start and then wait for the addon to start up, it should be quick. If you click the refresh button in the logs it will tell you when it is running.