For the original DVD (2003) and standard Blu-ray (2006–2011) releases of The Two Towers EE, there is no “installation” in the software sense. These are designed for playback, not data transfer to a hard drive.
Depending on whether you are looking for the movie or a game, here is how you can access and "install" The Lord of the Rings: The Two Towers Extended Edition : Movie (Extended Edition) For the original DVD (2003) and standard Blu-ray
video game, you can install the of the movie on your PC or experience the game via emulation . 1. Movie: Installing Extended Edition (DVD/Blu-ray) For the original DVD (2003) and standard Blu-ray
: Use MKVToolNix to merge the two files into one seamless movie. For the original DVD (2003) and standard Blu-ray