How to install the mac os x lion???

i have installed the mac os x lion developer review. now im trying to install the offcial one but it doesnt work.
it says :"this disk cannot be used to start up your computer".
please help!!!

I would submit the bug request to the Developer feedback mechanisms.  Your action of running the Developer preview is under a non-disclosure agreement.  Hence any issues with the Preview should only be submitted via the channels you got the Developer preview from within.  One that is known to all is http://bugreporter.apple.com/ If you got it without ever getting a non-disclosure agreement, you are in violation of Apple's agreements and should erase it from your machine, and start over again with a licensed 10.6 that either was first used to install 10.6 on your machine, or a newer retail edition.  10.6 came in 10.6, and 10.6.3 retail editions.  If your Mac was new after March 1st, 2010, it came with its own Mac Mini 10.6.3 or later installer disc which must be used to install 10.6.  Otherwise the retail 10.6.3 should work, as long as it doesn't say Upgrade, Dropin, OEM, or any specific Mac model.  Finally, apply the 10.6.6, 10.6.7, 10.6.8 combo update before upgrading to Lion from the Mac App Store if all your applications are ready for Lion.

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