We are losing the war against entropy. CD-Rs from the early 2000s are already becoming coasters. Pressed discs from the late 80s are delaminating.
Redump has shifted its focus in recent years from "collecting" to "racing." It is now a race against disc rot.
To combat this, Redump has extended its scope to include:
Many PS1 games hide "redbook audio" (standard CD audio tracks) in the pregap index. To hear it, you had to physically rewind the CD from Track 1 into a negative time index. Redump was the first to systematically document and preserve these hidden audio tracks that most commercial ripping tools ignored.
The act of redumping games walks a fine line between preservation, legality, and personal ethics. If you are considering digitizing your own game collection:
This guide aims to provide a balanced view on a sensitive topic. Always prioritize supporting game developers by purchasing their work through official channels when possible.
Redump.org: The Ultimate Guide to Optical Disc Preservation Redump.org is a dedicated disc preservation project and database aimed at archiving precise digital copies (dumps) of optical media, including games for consoles and PCs. Unlike other "ROM" sets that may prioritize small file sizes, Redump focuses on 1:1 accuracy
, ensuring that every bit of data—from the game files to the specific disc structures—is preserved exactly as it appeared on the original retail media. Why Redump Matters
In the world of digital preservation, not all copies are equal. Redump is widely considered the "gold standard" for disc-based systems because: Verification
: Every entry in the database is verified by multiple users or cross-referenced against known physical copies to ensure the data is "clean" and free of read errors. Completeness
: The project tracks regional variants, revisions (v1.0 vs v1.1), and even specific "ring codes" printed on the physical disc to distinguish between different manufacturing runs. Hardware Compatibility
: Because these are exact copies, they are essential for developers working on emulators or hardware clones that require 100% accurate data to function correctly. How to Get Started with Redump
Contributing to Redump is a collaborative effort that requires specific hardware and software to ensure accuracy. Redump.org 28 Dec 2025 —
Preserving History: Understanding Redump.org Redump.org is a disc preservation database and internet community dedicated to collecting precise and accurate information about video games released on optical media. In the world of digital archiving, it is considered the "gold standard" for disc-based games, much like No-Intro is for cartridge-based systems. What is a "Redump"?
A "dump" is a digital copy of a physical disc. A "redump" refers to the process of verifying or re-copying a disc to ensure it matches the original perfectly. The goal of the Redump project is to create a definitive database where every game has a verified, 1:1 digital representation. Why Precision Matters
Digital preservation isn't just about making a game playable; it's about authenticity. Many early "rips" of games were "bad dumps" that contained errors, were missing data, or had been modified by hackers.
Verification: Redump uses checksums (like MD5, SHA-1, or CRC32) to verify that a file exactly matches the original retail disc.
Standardization: The community follows strict dumping methods, often requiring specific hardware like compatible Blu-ray or DVD drives and specialized software like DiscImageCreator.
Completeness: Unlike some formats that compress data, Redump sets prioritize keeping the original content, including subchannel data and system-specific partitions, even if it results in larger file sizes. The Redump Database
The project maintains a massive searchable database of thousands of titles across dozens of systems. Redump.org
Redump: The Gold Standard of Optical Disc Preservation In the world of digital preservation, few organizations carry as much weight as Redump. Founded on the principle of scientific accuracy, Redump (formally the Redump.org project) is a collaborative effort dedicated to creating a comprehensive, bit-perfect database of optical disc software. While casual gamers might just be looking for a way to play their old favorites, the archivists at Redump are performing a critical service: ensuring that the history of computing and gaming is preserved exactly as it existed on the original manufacturing line. What is Redump?
Redump is a "disc preservation group" that focuses on optical media, including CD, DVD, GD-ROM, and Blu-ray. Unlike general ROM sites, Redump does not host the actual game files. Instead, it provides DAT files (metadata databases) that contain the precise cryptographic hashes (like MD5, SHA-1, and CRC32) and track information for every disc they verify.
Their primary mission is to ensure that a "dump" (a digital copy) of a disc is accurate. Because optical discs can have read errors or small manufacturing variations, Redump requires multiple users to submit identical results for the same disc before it is marked as "verified." This rigorous process eliminates the risk of bad sectors or "dirty" data polluting the historical record. The Philosophy of "Bit-Perfect" Archiving
Standard disc images (like common .ISO files) often strip away specific data that is crucial for certain systems to function correctly. This might include:
Subchannel Data: Data hidden between the main data tracks, often used for early copy protection.
Scrambled Data: How data is physically laid out on the disc surface.
Lead-in/Lead-out: Information at the start and end of the disc.
Redump’s methodology focuses on capturing the entire disc structure. By following the Redump dumping guides, volunteers use specific hardware (often specialized Plextor or LG drives) and software (like DIC—Disc Image Creator) to ensure every single bit is captured. Redump vs. No-Intro
If you are into retro gaming, you have likely seen "No-Intro" sets alongside Redump. While they share a similar philosophy, they cover different territories: redump
No-Intro: Focuses on cartridge-based systems (NES, SNES, Genesis, GBA). The name comes from their original goal of removing "intro" screens added by early piracy groups.
Redump: Focuses exclusively on disc-based systems (PlayStation, Saturn, Dreamcast, Wii, PC).
Together, these two projects form the backbone of modern emulation. Tools like the LaunchBox ROM Import Guide rely on these DAT files to help users organize their collections and verify that their files are official, uncorrupted releases. How to Get Involved
Redump is a community-driven project. Unlike some exclusive archiving groups, Redump account requests are generally granted to anyone willing to contribute high-quality data. To contribute, a user typically needs:
Compatible Hardware: Not every DVD/Blu-ray drive can read the subchannel data required for a Redump-verified copy.
Strict Adherence to Guidelines: Every detail, from the "ring code" (the serial number etched near the center hole of the disc) to the exact edition (OEM, Bundle, Platinum), must be recorded.
A Commitment to Accuracy: One bad dump can mess up the database, so the community peer-reviews every submission. Why This Matters
As physical media suffers from "disc rot"—the chemical breakdown of the data layer over decades—projects like Redump are racing against time. By creating a definitive digital blueprint of these games now, they ensure that even if every physical copy of Final Fantasy VII or Halo eventually becomes unreadable, the digital "DNA" of the software remains preserved for future generations. Moderating guidelines for IBM PC and other systems
If you're referring to Redump.org widely considered the gold standard for optical media preservation
. Unlike older "Good" sets (like GoodROM), which often included corrupted or modified files, Redump focuses on creating 1:1 digital "blueprints" of original game discs. Redump Wiki Why Redump is the "Good" Choice: Precision & Accuracy
: They aim for perfect, error-free copies that match the original manufacturing metadata. Verification Database
: You can use their database to verify your own dumps by comparing SHA-1 hashes to ensure they are authentic. Community Preservation
: The project is maintained by volunteers who have preserved over 50,000 PC discs and thousands of console games for systems like PlayStation, Sega Saturn, and GameCube. Redump Forum How to Use Redump Information: So how do I compare my dump vs. redump.org ? (Page 1)
Redump.org is a massive, community-driven disc preservation project and database dedicated to archiving precise digital "blueprints" of optical media. Unlike standard game ripping, Redump focuses on creating high-quality, verified copies that match the original physical disc bit-for-bit to ensure long-term digital preservation. Redump Wiki Core Principles and Philosophy Verification Through Redumping:
The project's name comes from its central rule: a disc must be dumped at least twice by different people to be marked as "verified" in the database. If two independent users get the exact same checksum (hash) from their physical copies, the dump is considered a perfect digital replica. No ROM Hosting:
Redump does not host game files or ROMs on its website. Instead, it provides a metadata library (in the form of
files) that users use to verify their own local files against the official community standard. Archival Integrity:
The goal is to preserve "original" data, including regional variations and different print runs (revisions) of the same title. Redump Wiki Redump.org
Redump is a prominent volunteer-led project dedicated to the preservation and documentation of disc-based media. Unlike standard "ROM" sites, Redump focuses on creating a "perfect" digital library through rigorous dumping standards and a verifiable metadata database. Core Mission and Philosophy
Preservation Standards: The project aims for "bit-perfect" accuracy. It sets itself apart by requiring dumps to be made from original physical discs, never from internet-sourced images.
Verifiable Results: Redump emphasizes verifiability. Each entry in its database is ideally confirmed by multiple contributors (verifiers) using different hardware to ensure the resulting hash is a true representation of the original data.
Metadata Focus: The website does not host game files (ISOs/ROMs). Instead, it provides .dat files—metadata catalogs containing hashes (like CRC32, MD5, SHA-1) that users use with tools like RomVault or CLRMAMEPro to verify their own files. Project Scope and Achievements Redump.org
Redump Report
Introduction
Redump is a comprehensive effort to accurately re-rip and verify the data on optical media, such as CDs, DVDs, and Blu-rays. The project aims to create a reliable database of media information, providing a valuable resource for collectors, researchers, and the gaming community.
Background
The Redump project was initiated to address the issue of inaccurate and incomplete media dumps, which can lead to problems with emulation, game compatibility, and preservation of digital content. The team behind Redump consists of dedicated individuals with expertise in data extraction, media analysis, and verification.
Methodology
The Redump team employs a rigorous methodology to ensure the accuracy and completeness of their dumps:
Progress and Achievements
The Redump project has made significant progress since its inception:
Challenges and Limitations
Despite the progress made, the Redump project faces challenges:
Conclusion
The Redump project has made significant strides in providing accurate and reliable media dumps, benefiting the gaming community, researchers, and collectors. While challenges persist, the team's dedication and expertise ensure the continued growth and accuracy of the Redump database.
Recommendations
To further support the Redump project:
Future Directions
The Redump project is expected to continue its growth, with plans to:
If you are a casual retro gamer who plays Super Mario World on a hacked SNES Classic, you might never need a Redump. But if you are a historian, a developer working on an emulator, or a hardware tinkerer building a MiSTer FPGA—Redump is your oxygen.
They are the silent guardians, the archivists with soldering irons, the people who spend 14 hours configuring a DOS driver for a Plextor drive just to verify a single track index on a copy of Myst.
Redump proves that the internet is not just for cat videos and arguments. Sometimes, it is for saving the pixels and audio samples of our childhood from the great silent void of bit rot.
So the next time you see a ".cue" and ".bin" file that works flawlessly, tip your hat to the dumpers. They are the librarians of the apocalypse, and they are winning.
For more information, visit the official Redump.org forums. Do not ask for ROMs. Do bring your own obscure, dusty discs.
Redump.org is a massive digital preservation project and community dedicated to creating a comprehensive, high-fidelity database of video games released on optical media. Unlike casual ROM-sharing sites, Redump focuses on archival accuracy, providing "blueprints" of original discs to ensure that software history is perfectly preserved. 1. Core Mission and Standards
The primary goal of Redump is to document every detail of a disc, including track offsets, subchannel data, and precise checksums.
Disc Integrity: Redump advocates for "clean" dumps that include the gaps between tracks, making them more accurate representations of the original factory-pressed media.
Verification: The community uses manual verification and cross-referencing of multiple dumps from different users to confirm a game's "correct" digital signature.
Strict Guidelines: To contribute, users must follow specific guides and often use approved hardware, such as certain Plextor drives, to ensure data is read without error or offset shifts. 2. Supported Platforms
Redump maintains records for a vast array of optical-media systems. While its database is constantly growing, it is particularly known for: Redump Wiki - Redump.org
Redump is a community-driven project focused on creating precise, 1:1 backups (dumps) of optical media games (CD, DVD, Blu-ray) for preservation and emulation purposes. Unlike standard ISO rips, Redump ensures the entire disc structure—including audio tracks, pregaps, and subchannel data—is perfectly captured. 1. What is Redump?
Goal: To preserve video game data by creating accurate, verified "blueprints" of console and PC game discs.
Method: Multiple users dump the same game to verify checksums against each other, ensuring the data is identical to the retail master.
Database: Redump.org acts as a repository for this data, providing datfiles, guides, and a "miss list" of games still needed for preservation.
Scope: Supported systems include PlayStation 1/2/3, Xbox/360, Sega Saturn/Dreamcast, GameCube, and various PC CD-ROM titles. 2. Key Components of Redump
BIN/CUE: The standard format for Redump dumps, where .bin contains the data and .cue describes the track layout. We are losing the war against entropy
Redumper/DIC: Specialized software (redumper CLI, DiscImageCreator) is used to read discs accurately, including those with tricky copy protection.
Subchannel Data: Crucial for games with libcrypt (PS1) or specialized ring protections, stored in .sub files.
AccurateRips/Offsets: The process accounts for the drive's read/write offset to ensure perfect byte-for-byte matching, which is especially important for audio tracks. 3. How to Perform a Redump
Preparation: Use a capable optical drive (e.g., specific LG, Plextor, or Optiarc models) and download the necessary tools from the wiki.
Dumping: Use redumper via command line to read the disc. It handles the raw reading and automatically generates the necessary files.
Verification: Compare the checksums of your dump (.bin) against the Redump database using the provided .dat files.
Submission: If the dump is new or missing, you can submit the dump along with the log file, ring code, and barcode to the Redump forum for verification. 4. Common Conversions & Tools Redump.org
Redump (formally known as Redump.org) is an international disc preservation project and database dedicated to archiving precise digital copies of optical media. Unlike standard "piracy" groups that focus on accessibility or file size, Redump prioritizes 1:1 bit-perfect accuracy, ensuring that the digital image of a disc is indistinguishable from the physical original. The Core Mission: Preservation Over Convenience
The primary goal of Redump is to create a definitive record of every software disc ever released, including video games, operating systems, and application software. This is critical because physical optical discs—CDs, DVDs, and Blu-rays—suffer from "disc rot," a chemical degradation process that can make data unreadable over time.
By utilizing rigorous dumping standards, the Redump community ensures that:
Data Integrity: Discs are "dumped" (copied) multiple times by different users to verify that the resulting hash (digital signature) is identical across different physical copies.
Protection Against Errors: The project accounts for factors like drive offsets and subchannel data, which are often ignored by standard burning software but are crucial for copy protection and metadata.
Global Cataloging: Each entry in the database includes detailed metadata, such as the disc's serial number, ring code (the physical text etched near the center of the disc), and version information. How the Redump Process Works
Dumping a disc for the Redump database is a meticulous process that requires specific hardware and software.
Hardware Requirements: Not every optical drive is capable of a "Redump-quality" rip. The community maintains lists of compatible drives (often older Plextor or LG models) that can accurately read lead-in/lead-out data and handle specific copy-protection schemes.
The "Dumping" Tool: Users often use specialized software like DicUI or command-line tools that interface with the drive at a low level.
Verification: Once a disc is ripped, its hashes (MD5, SHA-1) are compared against other submissions in the Redump database. If two different people dump the same disc and get the same hash, it is considered "verified." If a user finds a different hash, it may indicate a new revision or a bad dump. Why Bit-Perfect Dumps Matter
For the average user, a compressed or slightly altered file might work fine in an emulator. However, for historians and developers, bit-perfect copies are essential:
Emulation Accuracy: Modern emulators are becoming so precise that they require exact replicas of disc timing and subchannel data to function correctly.
Digital Archeology: Many discs contain hidden data, unused assets, or specific regional differences that are lost if the disc is not archived in its entirety.
Restoration: Having a bit-perfect image allows for the physical reconstruction of a disc should the original copy be destroyed. Redump in the Modern Landscape
Today, Redump is the industry standard for disc-based retro gaming preservation. It is widely used by the RetroArch community and various ROM managers to verify collections. While the project itself does not host copyrighted files for download, it provides the "recipes" (hashes and metadata) that allow users to verify that their own digital backups are perfect.
For those looking to contribute, the Redump Wiki offers extensive guides on how to properly document and submit new finds, ensuring that the history of digital media remains intact for future generations. Moderating guidelines for IBM PC and other systems
First, a crucial distinction: Redump.org is not a file download site.
You cannot go to Redump and download a PlayStation 2 ISO. Instead, Redump is a database. It is a community-driven project dedicated to creating a perfect, verified, and unique catalog of every commercially released video game disc.
Think of it as the Library of Congress for optical media, but instead of storing the books, they store the card catalog and the blueprint for how to rebuild the book perfectly.
The community "dumps" discs (CDs, DVDs, Blu-rays, GD-ROMs, UMDs) using specific, rigorous hardware and software techniques. They then calculate cryptographic hashes (like MD5 or SHA-1) and submit the disc’s metadata (track layout, pregaps, offsets) to the database. If two people in different countries dump the same game and get the exact same hash, the disc is confirmed as a "good dump."
Redump.org is a disc preservation database and community project. Its goal is to create accurate backups (dumps) of optical media (CDs, DVDs, GD-ROMs, etc.) and store the verifying data (checksums) in a public database. This guide aims to provide a balanced view
Unlike a "ROM site," Redump does not distribute games. Instead, it provides the Dat files and Hashes (like MD5, SHA-1) that allow you to verify if your personal backup is a perfect 1:1 copy of the original disc.