I only just found this site and really wish I had found it sooner. Or at least if I did find it previously knew the significance of what I was looking at.
The site is redump.org
. It's kind of "preservation society" for any/all game-related optical media. They have their "official" way of creating the 1:1 copy of a disc to generate the right hash and DAT files with MD5 and SHA-1 hashes. It's just a database of hashes, like I said. No copyright violations of any kind. That's would violate their own stated purpose.
From the site's wiki
Redump.org is a disc preservation database and internet community dedicated to collecting precise and accurate information about every video game ever released on optical media of any system. The goal is to make blueprints of the data on console and PC game discs. Redump.org also provides guides to ensure the dumps are correctly done. Users of the website who follow the guides correctly are encouraged to share their results to help build the database. Multiple dumps of games with the same serial number by different people are collected to ensure the same results are gathered, which help correct any incorrect dumps in the database as well as to help recognize alternate versions of the same game.
I only mention it because I'm finally starting to research a proper way to rip all my games. PS1 and PS2 must add up close to 300 by now. So I wanted to make sure I knew how to properly make the copy and gathered the requisite information on this initial run-through. I mean the last thing I want to do is rip them all again when the collection is even larger...
On a semi-related note, I'm almost done with my "magic batch file" which will highly auto-mate the ripping process. It will automatically detect what kind of disc it is (DVD or CD) and rip accordingly then do a verify of the image against the disc, generate the hash file file of the produced image file and store the information in a log file. And possibly record version information should a SYSTEM.CNF file be present on the disc but that might be relegated to a "bonus", I haven't decided it.
Actually, assuming i could generate the same hash files as redump (not confirmed yet) I was going to see if I could use the redump DAT file to identify ROMs by hash. Although there are already utilities for that so my doing so would be more of an exercise thing than anything else.
I don't know if anybody here would be interested in this "magic batch file" or not but it seems like all this work should be documented/shared in some fashion. Most likely I'll put it up on github
just for tracking purposes if nothing else.
And it's probably not necessary to re-iterate but I will anyway: I'm just talking about archiving my own private collection, which will remain private. It's no worse than ripping a DVD movie collection, which is discussed at length on OCN. So I'm just assuming it's okay to talk about.Edited by subassy - 9/6/16 at 1:25pm