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Fixing OS X Install Errors “can't be verified” and “error occurred while preparing the installation” | OSXDaily
![mac - Error on EL Capitan Installation This copy of the Install OS X El Capitan application can't be verified. It may have been corrupted or tampered - Ask Different mac - Error on EL Capitan Installation This copy of the Install OS X El Capitan application can't be verified. It may have been corrupted or tampered - Ask Different](https://i.stack.imgur.com/ItcCV.png)
mac - Error on EL Capitan Installation This copy of the Install OS X El Capitan application can't be verified. It may have been corrupted or tampered - Ask Different
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