iMac G3 DV picky about DVD disks?

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emuboy

New Tinkerer
Feb 19, 2025
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I have a 400mhz tangerine slot loading, it works fine, it reads disks, but it's really picky about DVDs, this "calibration" DVD works fine, everything else, os 9.2.2 spit it out telling me it can't recognise the disk, any idea why? is it a medium problem?
 

phunguss

Active Tinkerer
Dec 24, 2023
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Stillwater, MN
Way back in the day, there were gold CDs, blue CDs, and silver CDs... and each manufacturer has some limited ability to work with each kind. Are these rejected media commercial DVDs you are using (should be silver in color), or ones you have burned yourself? Any surface scratching (some drives are more tolerant than others)? If you are burning your own in another machine, make sure your slot load drive is compatible with the type of media you are using. Sometimes drives only like DASH (DVD-R/W) vs PLUS (DVD+R/W) media. Sometimes the ReWriteable media is not tolerated.
 
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emuboy

New Tinkerer
Feb 19, 2025
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Hey, yeah, I know about different media, I was around as well :)

I checked, these are both DVD-ROM, pressed, I can't put my finger on the fault...
 

phunguss

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Dec 24, 2023
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Any other machines running 9.2 that you can test the media in? Does it mount in OSX (if you have that installed in your iMac)?
 

phunguss

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Dec 24, 2023
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Stillwater, MN
Then I would guess it boils down to the actual drive going bad (or different laser wavelength). I don't have a slot load iMac (flavor), mine is tray load. Other flat panel iMacs and laptops had slot load drives you may be able borrow/steal one from and make work in your iMac, maybe with adapters and some mounting challenges.
 

phunguss

Active Tinkerer
Dec 24, 2023
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Stillwater, MN
One other thing you could try... load the media into your G4 Mac Mini and burn a new copy of it. Then try the copy in your iMac.
 

emuboy

New Tinkerer
Feb 19, 2025
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To avoid any software incompatibility I wii try mac osx, let's see if it does anything different.