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Chapter 1: Prepare a virtual machine for FreeDOS in VirtualBox

Chapter 2: Special settings for FreeDOS

Chapter 3: Connect the FreeDOS install CD

Chapter 4: Install FreeDOS

Chapter 5: Install the network

Chapter 6: Mount the FreeDOS image to transfer files

Chapter 7: FTP between host and guest

Bugs: High CPU usage of FreeDOS machine

Bugs: FreeDOS crashes at boot

Bugs: ICH9 chipset breaks networking

Bugs: Old bugs


  1. Install VirtualBox (if you haven't already). It can be found here.
  2. Download FreeDOS. The CD-ROM standard installer (FD12CD.ISO for FreeDOS 1.2) works fine with VirtualBox. Save this file on your computer.

Add a new FreeDOS virtual machine

  • Run VirtualBox and click "New".


  • Give your Virtual Machine a name.


  • Select the amount of memory. The default of 32 MB is fine for me.


  • Create a virtual hard disk.


  • Select the format of the virtual hard disk. Choose VHD to be able to mount the image as an external disk in Windows or macOS.


  • Choose if the size of your disk should be dynamically allocated. FreeDOS works fine with that.


  • Give the virtual disk a name and select the size of the harddisk.


  • The new FreeDOS virtual machine is added to your list of virtual machines.


Continue with Chapter 2