Introduction
Use this guide to install a hard drive in your iMac Intel 24" EMC 2134 or 2211.
Tools
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            Disconnect the hard drive thermal sensor by pulling its connector upwards toward the top of your iMac. 
 
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            Press the hard drive bracket down toward the bottom edge of your iMac to free it from the rear case, then rotate the top of the drive toward yourself. 
 
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            Insert the flat end of a spudger between the SATA power cable connector and the edge of the hard drive. 
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            Twist the spudger to separate the connector from the hard drive. 
 
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                            Conclusion
                          
                          To reassemble your device, follow these instructions in reverse order.