Some may find it difficult when they want to copy or backup the ebooks (epub or pdf) to other devices. This is due to most of the books which they bought contains the DRM system which will prevent them from copying. Since we have paid for the books so we have the right to read them on other devices we own. If you have bought many EPUB ebooks and want to remove DRM from EPUB books then first of all, you need to install Adobe Digital Editions on your computer and a DRM Removal program, and then only the goal of removing DRM will be reached. The question arises that why need to remove DRM from EPUB/PDF books.