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Redump.org is a video game optical disc preservation database focused on preserving data/contents of computer and console games and game-related media such as soundtrack discs, bonus content discs, beta version discs, press kit discs (with unfinished builds of games sent to journalists for review), promo discs, game-related software, and so on, and also any discs meant to be read on video game consoles' optical drives, for which it provides users with version numbers and checksums, such as CRC32/MD5/SHA1 (not actual data, though, because it's copyrighted material). As Redump.org' describes itself, 'If it spins, is read by a laser and has digital game data on it; we want to preserve it.' Thus cartridge-based media is ineligible for Redump.org and is handled by its sister project No-intro instead.
Redump.org provides users with its own guidelines for correct dumping different disc formats (such as CD-ROM, DVD-ROM, GD-ROM, Universal Media Disc, BD-ROM, HD-DVD, Nintendo Optical Disc, etc.), relevant software tools and information on technical nuances of the process, as well as its own list of needed redumps for different systems, all available on its own wiki.[1] Each dump needs verification to assure data integrity. Per Redump.org rules, the tracks are split, offsets are dealt with, and dumps take 2352 bytes per sector instead of 2048 (addition 304 bytes per sector are used elsewhere, e.g. PlayStation One games to store user data instead, hence why .iso file format is discarded as it only supports 2048 bytes per sector, and .bin/.cue sheet is used for anything that comes off a CD). Since parsing certain data with perfect accuracy is extremely difficult (e.g. subchannel data), some media is currently undumpable (particularly, CD+G, a karaoke format disc which stores pictures in its subchannels). For some eligible systems (e.g. Pioneer LaserActive), currently no datasheets exist yet and their addition is WIP.
Unlike TOSEC which focuses on preserving everything as is in the wild (FDDs, cartridges, magazines, video game manuals, videos, bad ROMs, bad files, extra backup files, alternative replacement files, hacked/modified ROMs, fake ROMs, homebrew ROMs and whatnot, many of those may not even work correctly), Redump.org is narrower in scope. On 7 February, it reached the milestone of 100,000 dumped discs.
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