I'm trying to add files to an install.wim file so that they will show up on the system after the OS has been deployed.

I have tried the following steps:

1. Mount the image with "imagex /mountrw..."
2. Copy the files I need to the Windows directory of the mounting image.
3. Commit changes and unmount the image. "imagex /unmount /commit..."

I also remounted the image to make sure that the files I added exist on the image, but after running a PXE install with the image, the files do not exist on the freshly deployed system.