Installing WindowsME Without a Previous OS You can install WindowsME without having a previous operating system installed. You just need to have a pervious version's CD available. I recommend copying the source files to the hard drive and installing from there. When you are prompted for a previous operating system, simply insert your Windows95/98 CD and browse to the directory where the source files are located. You can then continue installing on a clean system without having to install a previous version. This should save a lot of time in the event you need to reinstall WindowsME from scratch.