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A reminder that CD-ROMs are pressed from glass masters, not burned like CD-Rs. I wonder if anyone has tried something like this with burned discs, though.
by fluoridation 2mo ago
A reminder that CD-ROMs are pressed from glass masters, not burned like CD-Rs. I wonder if anyone has tried something like this with burned discs, though.
- ekelsen 2mo agoYes, my point, if the answer is that there is no way this works without every disc being different. It was not possible to manufacture at the time at scale.
- fluoridation 2mo agoIt's still not possible. You would need to make a unique master for every individual unit.
- vanviegen 2mo agoYou'd use CD-R of course.
- fluoridation 2mo agoWith CD-Rs it was already possible in the mid '90s, if we're talking mass production. CD-Rs are a little more expensive to produce, but not much more so. A slight concern is that readers of the time might not have been able to read the discs, because CD-Rs are not quite as reflective as CD-ROMs.
- kevin_thibedeau 2mo agoThe multisession standard actually afforded the possibility of CD-PROM; a hybrid disc with a pressed read-only session followed by a writable section. It was only used for Kodak Picture CD (not the same as Photo CD) to hold software in the pressed session. It also apparently standardized a magneto-optical hybrid that never made it to market.
- kalleboo 2mo agoIt was also used by Ricoh EncryptEase - CD-Rs with encrypted backup software in an initial pressed track. https://www.youtube.com/watch?v=_5ucImqdKbY https://www.youtube.com/watch?v=_5ucImqdKbY
- notpushkin 2mo agoHmm, it could work then if they’ve pressed most of the game data first and then recorded the encrypted part for each disk. But I guess the tooling for such setup would still be too expensive.