By using DISM, you can mount and get information about the Windows image (.wim) files or virtual hard disk (.vhd or.
Why? It is because that the hidden recovery image on your computer can do you a favor. You, as an ordinary Windows user, can also make use of the DISM tool to fix some common problems. To put it in a simple way, DISM is a basic Windows utility designed for network administrators to finish tasks like system images preparation, modification, and repair, when necessary. DISM is mainly used for mounting and servicing the Windows images (including the ones used for Windows Recovery Environment, Windows PE, and Windows Setup) before deployment. DISM is the acronym of Deployment Image Servicing and Management it is actually a command-line tool built-in every Windows system (Windows 10, Windows 8, Windows 7, etc.).