Found myself in a situation where I needed to get DOS installed in a VM for a legacy application. Found the post below on the Parrallels forum very usefull
Scaricare e Installare Microsoft MS DOS 6.0 + MS DOS 6.22 Italiano. Internet Archive HTML5 Uploader 1.6.3 Year 2016. Be the first one to write a review. DOWNLOAD OPTIONS download 1 file. JPEG download. Download 1 file. RAR download. You may want the option to boot to the older MS-DOS 6.22 prompt rather than one of. Click the 'DOS6.22bootdisk.iso' link to download the file and save it to your computer. Insert a USB flash drive into a free USB port on your computer.
I just install a brand new VM with MSDOS 6.22. Here is what I did:
1. Download MSDOS 6.22 installer, as an ISO file, from here: http://www.allbootdisks.com/download/iso.html This is the trick, because trying to use floppy images was a nigthmare. 2. Create a new VM and configure it for MSDOS. In my case, I created a new VHD with 250 Mb and assigned 4 MB of RAM. 3. Configure the boot sequence to: CD, HD, Floppy 4. Connect the CD to the MSDOS 6.22 ISO image 5. Startup the VM. If Parallels ask you to connect an image file to the CD, do it again in that dialog 6. After the VM starts, you will end with an A: drive, wich is actually the CD with the MSDOS 6.22 ISO image 7. Execute FDISK and create a primary DOS partition with all the size of the disk, or do whatever partition scheme you want. 8. Restart the VM. At A: prompt execute FORMAT C: /S 9. Stop VM and change boot order to HD – CD – Floopy 10. Restart VM 11. Execute all these commands: C: MD MSDOS COPY A:*.* .MSDOS /v COPY A:CONFIG.SYS COPY A:AUTOEXEC.BAT COPY A:HIMEM.SYS COPY A:CD1.SYS 12. Restart your VM and you are ready to go!!
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When you have to update the BIOS of an older system, sometimes you have to boot into the old MS-DOS or FreeDOS and then execute the update program. This problem no longer exists in the newer UEFI based motherboards. We have already posted about how you can create a bootable FreeDOS CD for this purpose. But you can also create a bootable MS-DOS CD if you want a quicker solution. You won’t have to go through various steps as we posted about the FreeDOS CD. Here is how:
Download and install ISO Workshop in your PC from http://www.glorylogic.com/iso-workshop.html.
Click on the Make ISO button to create a new ISO image.
In the window that opens, choose Bootable and then select the Dos622.img file that comes with ISO Workshop. Click OK to proceed.
Now you can add any DOS programs like the BIOS update program to the ISO image by dragging and dropping these files in the Make ISO window. Change the disk type to CD 650 MB. Click Save to proceed and save the ISO image somewhere on your hard drive.
You can use ISO Maker to burn this ISO image to a blank CD with your CD/DVD writer.
When you boot using this CD, it will go straight into DOS. But since Microsoft DOS version 6.22 is a very old operating system, some of the newer DOS based programs (that were developed on a FreeDOS system) might not work or fail to run properly using this bootable CD.
In any case, if you are not able to use your programs through this bootable CD, then you can use the bootable FreeDOS CD that can be created using the steps we have mentioned in our previous post – how to create FreeDOS CD to update the BIOS on older systems.