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by JoshTriplett 3630 days ago
> I've never had a Saturn, so I don't know what this wobble edge looks like in person. Am I missing something?

The video shows it: https://www.youtube.com/watch?v=jOyfZex7B3E#t=2m13s

1 comments

The video's graphic is a bit of an approximation. In practice it appears that every second disc sector is displaced, IIRC. And they've got particular bit patterns written into them to produce a visual logo; these patterns (but not the actual logos) are checked too.

The protection ring is visible to the naked eye for this reason. I can't find a picture, sorry!

I tried to figure out how to reproduce the logo at one point (10+ years ago, when people were less worried about dying drives). IIRC, it's that the EFM patterns used to make the pixels don't make valid Red/Yellow Book sector contents, which causes some weird behavior if you try to read them as such.