Where to Find DISM?
Applies To: Windows 7, Windows 8, Windows 8.1, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2
Deployment Image Servicing and Management (DISM.exe) is a command-line tool that can be used to service a Windows® image or to prepare a Windows Preinstallation Environment (Windows PE) image. For more information about DISM see What is DISM?
To get DISM, download and install the Windows Assessment and Deployment Kit (Windows ADK), see Windows Assessment and Deployment Kit (Windows ADK) Technical Reference.
DISM appears in the Windows ADK here:
C:\Program Files (x86)\Windows Kits\<version>\Assessment and Deployment Kit\Deployment Tools\<arch>\DISM
where <version> can be 8.0 or 8.1 and <arch> can be x86 or amd64.