However, in certain situations, you might be forced to install Windows from a bootable drive (such as when your system without an optical drive becomes unresponsive). You just need to copy paste the setup files from your DVD from a working computer with an optical drive on to your device without optical drive. This does not normally cause issues as Windows can be installed with the setup files on any working computer. However, with the advent of ultra portable devices and tablets that do not have optical drives, installing Windows from the setup DVD becomes a problem. The Windows DVD can be put into an optical drive for easy installation. Windows is sold in the form of DVDs and downloadable ISOs.
