Disc drive automatically rejects discs after being inserted.

The past few days, whenever I insert a disc for a game into my MacBook Pro 13" (2009 model, purchased in 2010) will reject the disc and spit it back out. To describe the noise it makes, it is the usual start up noise the drive makes, and then it suddenly drops off, then starts back up again, as if the computer is trying again to read it, but cannot. Consistently after 3 'tries' it will reject the disc. It has done this maybe every other time I insert a disc for the past week, but often I will try to roll the dice later in the day and it may or may not work.. Today it has happened every single time I attempt it. Not sure what I should do. Is this something I can adjust from home in preferences or something? I don't want to fiddle with the components or dismantle it myself in any way, so if it needs servicing I will take it in, just need to know where to start from. Anyone else experienced something like this before?

It sounds like the lens on your optical drive is dirty. Use a cleaning DVD or wrap a microfiber cloth around a credit card and carefully slide it in and out a few times.

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    Too bad if you only have a Mac Because if the Mac disk utility can read the External HD it says that the disk has crashed and needs to be replaced.
    Nice one Apple...
    So now for my questions.
    Why does mac add hidden files to an external hard drive when not ejected properly that prevents it from operating again on a Mac ?!!!!
    How do i prevent apple from adding these hidden files?

    Can you see the drive in Disk Utility? If so, try selecting it and using the Mount button in the top menu. You can also run repair disk and repair permissions.

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    I've read the help guide but once this stage completes, having read the next few steps, I'm lost.
    And those few steps were?  Care to share?
    Lacie has great tech support.  Call them - http://www.lacie.com/support/faq/faq.htm?faqid=10338

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