VirtualBox - Chapter 2
Chapter 2: Special settings for FreeDOS
Special settings for FreeDOS
Some DOS programs send VirtualBox wrong signals about how much CPU power they need. So VirtualBox allows them to run the CPU at 100 percent. You will notice this by a louder fan noise and some laptops tend to get warm when a FreeDOS guest is run.
A workaround is to limit CPU usage to 40 percent. A loss of performance of the FreeDOS guest is - at least for me - not recognizable.
Please read here about more ways to solve this.
By default VirtualBox sets the network adapter of the guest to "NAT". This means, the guest communicates to the rest of your network only through the host.
If you install this at home and have a WiFi network there, it might be more convenient to set the network adapter to "Bridged Adapter". This enables the FreeDOS guest to communicate with the network directly.
If you really want to use NAT instead, see here how to do it.
Under VERY special circumstances, you might even want to use two network adapters with your FreeDOS guest in VirtualBox. See here for more information.
Continue with Chapter 3