Introduction
The same instructions can also be used to replace the original hard drive (SATA 500 GB, 5'400 rpm) with a more powerful hard drive or an SSD hard drive.
Tools
Parts
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            Using the Phillips # 1 screwdriver, remove the hard drive cover. 
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            Grasp the transparent tab to separate the hardtop from the SATA connector. 
 
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            Using the Phillips # 1 screwdriver, remove the four screws securing the plastic cover. 
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            This cover is then reinstalled on the new hard drive. 
 
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                            Conclusion
                          
                          For reassembly, follow the instructions in reverse order.