I have a few operating systems I would like to emulated inside of my current windows. I have two questions I tried googling them and got nothing. 1. Is emulating guest OSs stable enough to do everyday things in it? Or for a long time period? If not how long do I have? 2. Can the host OS become messed up if the guest OS gets infected with viruses/malware or certain OS files become deleted/corrupt will it do so in the host? Note too I am limited to the ram I have so in this case I will be using no more than 1gb of ram for each guest.