Internal hard drive not recognized

  1. Boot from the MacBook Pro Mac OS X Install Disc 1 which came with the system (hold down "C" key while booting).
  2. If not the primary boot volume, use Apple System Profiler to check under 'Hardware: Serial-ATA' option to see if the system recognizes the hard drive hardware.
  3. Check the SMART status. If the status is 'About to Fail' or 'Failing,' replace the hard drive.
  4. Reseat the hard drive flex cable.
  5. Check the hard drive flex cable for damaged connectors (a connector peeled off the flex cable, for example); if damaged, replace the hard drive flex cable.
  6. If still not recognized, replace the hard drive.
  7. Replace the logic board.
  8. Reinstall system software using the MacBook Pro Mac OS X Install Disc 1.

Note: Don't forget to install both the Mac OS X system and application software.

Important: If the computer is under warranty and data recovery is required, refer to Knowledge Base article 31077: DriverSavers: Hard drive data recovery and warranty implications for important information.

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Apple Technologies Explained

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