Dell GX620 - 3.6GHz Desktop 1GB RAM 80GB Windows XP SFF User Manual page 51

Gently slide the hard drive into the drive bay until it clicks into place.
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Connect the power and hard-drive cables to the drive. Connect the hard-drive cable to the
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connector on the system board.
Check all connectors to be certain that they are properly cabled and firmly seated.
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Replace the computer
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If the drive you just installed is the primary drive, insert a bootable medium into your boot drive.
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See the documentation that came with the drive for instructions on installing any software
required for drive operation.
Enter system setup
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Exit system setup, and reboot the computer.
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Partition and logically format your drive before you proceed to the next step.
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See the documentation for your operating system for instructions.
Test the hard drive by running the
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If the drive you just installed is the primary drive, install your operating system on the hard drive.
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cover.
and update the appropriate Primary Drive option (0 or 1).
Dell Diagnostics.
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