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The eight regions each correspond to a value which is a power of 2: Region 1 corresponds to 1 (2 0), Region 2 to 2 (2 1), Region 3 to 4 (2 2), and so on through Region 8, which corresponds to 128 (2 7). The values of each region that the disc is not encoded for are added together to give the value in the file. For example, a disc that is ...
In modern DVD drives (type RPC-2), the region lock is saved to its hardware, so that even reinstalling Windows or using the drive with a different computer will not unlock the drive again. Unlike DVD regions, Blu-ray regions are verified only by the player software, not by the computer system or the drive.
A normal DVD player can only play region-coded discs designated for the player's own particular region. However, a code-free or region-free DVD player is capable of playing DVDs from any of the six regions around the world. The CSS license prohibits manufacturing of DVD players that are not set to a single region by default. While the same ...
DVD Forum's DVD Books [1] [2] [3] and DVD+RW Alliance specifications: Developed by: Sony Panasonic Philips Toshiba: Dimensions: Diameter: 12 cm (4.7 in) Thickness: 1.2 mm (0.047 in) Weight: 16 grams (0.56 oz) Usage: Home video, Computer data storage: Extended from: LaserDisc Compact disc: Extended to: DVD+RW, DVD-RAM (Fixed-track writable media ...
From an avoided double redirect: This is a redirect from an alternative title or related topic of DVD region 2, another redirect to the same title. Because double redirects are disallowed, both pages currently point to DVD region code#Region 2.
Newer drives use RPC-2 firmware, which enforces DVD region coding at the hardware level. See DVD region code#Computer DVD drives for further information. Some RPC-2 drives can be converted to RPC-1 with the same features as before by using alternative firmware on the drive, or on some drives by setting a secret flag in the drive's EEPROM
Xbox (DVD) Two sets of media descriptors are used. Initially, and on typical DVD-ROM drives, only a short partition containing a brief DVD Video can be seen. The lead-out section of the disk stores a second set of media descriptors describing the bounds of the main partition. It also contains a partially-encrypted "security sector" used for ...
Generally, no - they have both a Blu-ray region and a DVD region. For example, a UK PS3 will only play region 2/region free DVDs and region B/region free/all region Blu-rays. Of course, like with standard DVD players there are region-free players available (although I don't know how prevalent they are).