Introduction
Tools
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            Grab the hard drive data cable from both sides of the connector and unplug it from the hard drive. 
 
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            Unscrew the two screws on the case of the hard drive with a T10 screwdriver. 
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            Pull the hard drive up and out of the TiVo unit. 
 
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            Unscrew the four screws, shown in the picture, with a T-10 screwdriver. 
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            Remove the hard drive from the case. 
 
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                            Conclusion
                          
                          To reassemble your device, follow these instructions in reverse order.