Step 1: Step 1: Download VirtualBox
Step 2: Step 2: Download DOS 6.22
The files have the extension .img, which is a virtual floppy disk image.
Step 3: Step 3: Run VirtualBox and Set Up the Virtual Machine
First, open VirtualBox
At the top of the screen, you will see a button labeled "New". Click that.
Give the virtual machine a name.
Give the virtual machine some RAM. I chose 64 megs because that is the most that DOS 6.22 will see. You could choose something lower if you wanted to.
Click "Create New Disk".
Choose a virtual hard drive format. The top option works fine, unless you have a reason to choose a different one.
Choose between dynamically allocated and fixed size. Dynamically allocated will let the virtual hard drive grow and shrink as you add files, but will be slower. Fixed size would be like the hard drive in your computer. It is only one size. This will vbe faster.
Choose the size of the hard drive. If you chose dynamically allocated, you will choose the maximum size of the hard drive.
Click create again.