How to install MS-DOS 6.22 upgrade in a virtual machine without bootable DOS 6.0 installation media

installationms-dosvmware

I am trying to create an MS-DOS 6.22 virtual machine in VMware.

I have MS-DOS 6.0 and the 6.22 upgrade from the MSDN subscriber downloads. In order to install the 6.22 upgrade, I have to install 6.0 first. The 6.22 download includes .IMG files from which I can boot, but the 6.0 download does not. I tried creating a bootable .ISO image from the 6.0 files, but that didn't work.

How do I install it?

Best Answer

You can install using 6.22 alone. Boot into the 6.22 install and exit the setup with F3 before you get the upgrade warning and return to the DOS prompt.

You need to FDISK and Format the C: drive. Then you can use the SYS command to transfer the system files to C:. After all this, run the 6.22 install again and you should no longer get the upgrade warning.