Recording medium, recording device, and playback device for use in individual sales and method therefor

摘要

A recording medium has a hierarchical directory structure. In the directory structure, a ROOT/BDMV directory and a MoDESTxx/BDMV directory are located below a root directory. The ROOT/BDMV directory contains a BD-J application that constitutes a FirstPlayback title. The BD-J application is a program to be first executed by a playback device upon loading of the recording medium to a playback device. When executed, the BD-J application causes the playback device to display a menu for receiving a user operation of selecting the BDMV directory and executes a root change function. The root change function is to cause the playback device to recognize the selected MoDESTxx directory as a virtual root directory.