Lenovo E100 Hardware Maintenance Manual page 104

5. Slide the drive toward the rear of the chassis until it can be removed.
6. If the drive you are replacing has jumpers on the rear, make sure the jumpers
7. Slide the new drive into the bay until the screws holes on each side are aligned
8. Reconnect the signal and power cables to the rear of the hard disk drive.
9. Go to "Completing the FRU replacement" on page 105.
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Lenovo 3000 E100
on the new drive are in the same exact position as the drive being replaced.
and install two screws in each side of the drive.