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cd-rw's not cd-r's only readable media on dvd player

wxjunkie

Senior member
Other than DVD's of course, my Panasonic RV-20 dvd player will only read first-time-recorded CD-RW's. I thought it may have been the color and or density of the media, so I used a black cd-r, but to no avail. Anyone know what mite be causing this?
 
It is the colour of the media that causes this. CD-s were originaly designed to be read with an infra-red laser. DVDs are read with a red laser.

There should be no problems reading a CD with a higher performing laser (i.e. a red one), and there aren't.

However, CD-Rs are slightly different from normal CDs, they contain a coloured dye. Some CDRs use a green dye (which if you think about it, means that it absorbs red light, and doesn't reflect it). If the red laser isn't reflected by the disc, then the disc is unreadable.

CD-RWs reflect equally well at red and infra-red wavelegnths, and can therefore be read quite well with a red laser.

The DVD drive manufacturers were quick to spot this problem, and later generation DVD drives were built with 2 lasers, a red one, and an infra-red one for compatability with CDR.

 
So what would you suggest as a possible alternative to CD-RW, since it's more expensive than a CD-R? Or is there one... I want to find a CD-R media that my dvd player will read.
 


<< So what would you suggest as a possible alternative to CD-RW, since it's more expensive than a CD-R? Or is there one... I want to find a CD-R media that my dvd player will read. >>

That DVD player won't reliably read ANY CD-R's. It's just not physically able to. You need to buy a different DVD player that can read all media types or else just a plain-old CD player to play CD-R's.
 
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