What is drm and how do i upload to my l9...?

Digital rights management (DRM) is a generic term that refers to access control technologies used by hardware manufacturers, publishers, and copyright holders to limit usage of digital media or devices. The term is used to describe any technology which makes the unauthorized use of media or devices technically formidable and generally doesn't include other forms of copy protection which can be cirvented without modifying the media or device, such as serial numbers or keyfiles. It can also refer to restrictions ociated with specific instances of digital works or devices.