Super drive can read factory discs but not burned discs

Discussion in 'MacBook Pro' started by poiihy, Oct 11, 2014.

  1. poiihy macrumors 68020

    poiihy

    Joined:
    Aug 22, 2014
    #1
    If I insert a factory CD/DVD (like a mac os x install disk or a movie, these disks are usually silver colored), it works. But if I install a burned disk (homemade) it does not work. A burned CD appears as a blank CD, allowing me to burn over the data. A burned DVD will be tried to be read but then be ejected. What is wrong?
     
  2. Intell macrumors P6

    Intell

    Joined:
    Jan 24, 2010
    Location:
    Inside
    #2
    Your drive is failing or the lens is dirty. Try a lens cleaner disc. If that does not fix the problem, the drive will have to be replaced.
     
  3. poiihy thread starter macrumors 68020

    poiihy

    Joined:
    Aug 22, 2014
    #3
    Wow that was fast

    What is the difference between a factory disk and a burned disk? It is odd that it can read factory disks but not burned disks, I would think a dirty lens could not read any DVD but can read any CD, or not even any CD.
     
  4. Intell macrumors P6

    Intell

    Joined:
    Jan 24, 2010
    Location:
    Inside
    #4
    A factory disc is pressed and has a sharper easier to see 1/0 patter to see than a burnt disc.
     
  5. Nermal Moderator

    Nermal

    Staff Member

    Joined:
    Dec 7, 2002
    Location:
    New Zealand
    #5
    It's to do with the materials used. I had a dying drive that would read blue-surfaced CD-Rs but not green ones.

    Edit: And because pressed is better, as noted by Intell :)
     

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