copying commercial dvd

CD/DVD copy protection is a set of copy protection mechanisms that prevent users from copying compact discs (CDs) or digital versatile discs (DVDs). These mechanisms vary widely and include DRM, CD-checks, Dummy Files, illegal table of contents, over-sizing or over-burning the CD, physical errors, bad sectors and more. Many of these protection schemes rely on breaking compliance with the CD and DVD standards, leading to playback problems on some devices.

All CD/DVD copy protection schemes rely on some kind of distinctive feature that

Technology

Illegal filesystems / Dummy files

Most CD-ROMs use an ISO9660-filesystem to organize the available space into folders and files. Circuit City invites wrath of the MPAA by copying DVDs.