Internal hard drive not recognized
- Boot from the MacBook Pro Mac OS X Install Disc 1 which came with the system (hold down "C" key while booting).
- 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.
- Check the SMART status. If the status is 'About to Fail' or 'Failing,' replace the hard drive.
- Reseat the hard drive flex cable.
- 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.
- If still not recognized, replace the hard drive.
- Replace the logic board.
- 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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