Things You'll Need:
- Phillips head screwdriver Hard drive jumper cap (optional)
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Step 1
Shut down the computer containing the backup drive you wish to set to the primary position.
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Step 2
Disconnect all the cables attached to your computer and then sit it on a cleared work surface--such as a table or a counter.
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Step 3
Remove the case screws from the edges of the back of your computer.
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Step 4
Slide the casing off the sides of your computer to reveal its internal components. Your hard drive will be located in the metal drive bay adjacent to your computer's motherboard.
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Step 5
Remove the jumper pin from the current primary drive--the primary drive will have a jumper cap placed over two of the drive's jumper pins, while the secondary drive will not.
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Step 6
Place the jumper cap on the backup hard drive's jumper pins in primary, or "master" position--consult the chart printed on the drive for specifics on the cap's placement.
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Step 7
Replace the computer's case, screws and cables.











