Edit an Existing WIM

Open the Deployment Tools Command Prompt, Elevated

Browse to the appropriate version of ImageX you need.

Either: cd C:\Program Files\Windows AIK\Tools\

x86, amd64, ia64

Run the following command:

(Read Only)

imagex.exe /mount c:\winnamehere.wim 1 c:\mountlocationhere


imagex.exe /mountrw c:\wimnamehere.wim 1 c:\mountlocationhere

(Note: The “1” is the image’s index number, in case you have appended multiple WIMs to a single file.)

When done, unmount the WIM:

imagex.exe /unmount /commit /c:\mountlocationhere

Microsoft’s Technet Library: