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!!install!!: Redump

What is Redump?

Redump is a collaborative, global project dedicated to creating accurate, verifiable, and complete disc image dumps of optical media (CDs, DVDs, Blu-rays, HD-DVDs, and even some console cartridges and tapes).

Its primary goal is software preservation. Unlike simply copying files from a disc, Redump aims to capture the entire physical and logical structure of the original medium, including subchannel data, error correction codes, and mastering information. This ensures the digital copy is a perfect 1:1 replica (a "bit-perfect" dump) of the original disc. redump

The "Shrek" Subchannel Scandal

For years, the Sega Saturn port of Shrek was "undumpable." Every copy failed hashing. Redump investigators discovered that the subchannel data on the official disc contained uninitialized gibberish that varied from minute to minute. They had to develop a new method to "ignore" the dynamic subchannel while validating the static data. What is Redump

The PlayStation Pregap Audio

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. Learn accepted dumping procedures and required tools from

3. Required Hardware

You cannot use a standard DVD drive to dump certain disc types accurately. You need specific hardware to bypass disc protection.

How to Contribute

  • Learn accepted dumping procedures and required tools from the Redump community guidelines.
  • Submit accurately dumped images with full metadata and checksums.
  • Provide provenance and any notes about disc condition or unusual characteristics.
  • Participate in database curation by validating existing entries and reporting discrepancies.

Metadata and Database

  • Each entry includes standardized fields: Platform, Title, Region, Serial/Catalog Number, Release Date, Media Type, Number of Discs, Dumping Notes, and Checksums.
  • Database supports searching, cross-referencing multiple pressings and regional variants, and tracking provenance of submissions.