Most often the patch will require you to run an application after installing the game or to copy the patch files into the installation directory.

After mounting, seek out any read-me files included with the game and/or patch for installation instructions.This ensures that the game works properly in the environment it was coded for, otherwise you may run into any particular game not working properly, such as installation failures, the game engine failing to run, garbled text, and so on. Set your system to properly display in Japanese for non-Unicode programs.

Typically these files have extensions such as. What this software does is create a virtual CD/DVD drive with which to 'mount' and run disc images (1:1 copies of the original game disc converted into a large data file).