WARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before Working Inside Your Computer. After working inside your computer, follow the instructions in After Working Inside Your Computer.

CAUTION: To avoid data loss, do not remove the hard drive while the computer is On or in Sleep state.

CAUTION: Hard drives are extremely fragile. Exercise care when handling the hard drive.

NOTE: The secondary hard-drive or solid-state drive is optional and can be installed in the optical drive bay.

Remove the screws that secure the secondary hard-drive assembly to the computer base.