~The insights of crappy Jasmine gal~

Monday, May 23, 2005

Don't Scratch the Top of a CD!

I was working with my colleague, Jenny, yesterday when she suddenly turned around and asked me one question.

"Which side of the CD, when scratched, can no longer be listened?"

Although i felt weird with her question, i still answered, " The bottom of the CD, the shiny part.." Which she immediately gave a big "Wrong" as a response.. This really triggered my curiosity and i asked her why..

She told me that the data in a CD is actually stored at the top of the CD, thus when you scratched the top, the machine is unable to read the disc anymore.. She got to know this during a meeting and she even asked her cousin, an computer engineer about the accuracy of the info..

I was pretty surprised as nobody had told me this before.. I believed not a lot of people know about this as most of my customers only check the bottom side of the disc.. Even i, working there for 2 years plus dont even know..

Yesterday night, after hearing what she said, i decided to check this online for any related articles.. ( i believe her but still need to get more info to post entry). I found two and here are the links:
1. http://www.cdrepairman.com/repair.html
2. http://www.tuxfordscreenprint.com/News/News.aspx?ID=100

So people, next time you look at a disc, pls look at the top as that's where the existence of scratches really counts...

Funny video to watch for relaxation: http://xiorix.spymac.net/Stun.wmv


  • Technically, you are not wrong by saying the shiny side. It's really the shiny side that stores data. But that shiny side is embedded in the top layer, not the bottom layer. Both sides are important in fact, that's why ppl are not advised to put CDs on the rough surface where there's contact between any surfaces of the CD with the surface.

    The bottom part is important as if it was scratched, the laser from the CD-* drive will not be able to reach the data layer flawlessly. The top is obviously important as a scratch means losing your data forever.

    By Anonymous cH, at 11:03 AM  

  • Hmmm, I did not know that. Thanks :)


    By Blogger Angie, at 3:55 AM  

  • ch
    Thanks for the info.. i think that's why ppl only looked at the bottom part.. Now i looked at both sides.. equally impt to me..

    You are welcome.. i wanted to let more ppl know as it's not commonly known.. :p

    By Blogger Jaschocolate, at 10:44 AM  

Post a Comment

Links to this post:

Create a Link

<< Home