How to Install DOS 6. Leeds Green Building Manual on this page. Under Virtual. Box 6 Steps. Right click on the virtual machine you just created and click settings. I renamed mine DOS because I already had one nme DOS 6. Go to the System page and click on the Acceleration tab. Make sure everything is UN checked. Next go to the Display page and set the amount of video memory. I used 8 MB, but you can use pretty much any amount above the red. Next go to the Storage page and click on the Add Controller button. Then click Add floppy controller. Click on the Add Floppy Device button. In the windows that pops up, click Leave Empty. How To Open Iso Files In Virtualbox' title='How To Open Iso Files In Virtualbox' />Next go to the Audio page and make sure it is set to Sound. Blaster 1. 6. Go to the Network tab and choose Bridged Adapter, then choose your network adapter. I dont know if DOS can access the internet, but this is the setting you would need to perform for any virtual machine to access the internet and the network. This is optional Next to go the Serial Ports page. If you need serial support, you need to check the check box Enable Serial Port, and if you need two ports, go to the Port 2 tab and uncheck the same box. Click OK at the bottom of the window. How To Open Iso Files In Virtualbox' title='How To Open Iso Files In Virtualbox' />6th July, 2017 Ill leave this here for the moment. I have also included it under ASE license expiry in the Concise Installation Guide. So, you want to. In this step, you will add a virtual machine that will run DOS 6. First, open VirtualBox At the top of the screen, you will see a button labeled New. Once QEMU has been installed, it should be ready to run a guest OS from a disk image. This image is a file that represents the data on a hard disk.