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Introduction

There are many benefits to adding a second hard drive to your laptop such as improved speeds, greater storage space, and less heartache when installing new software. Use this guide to install one using our optical bay hard drive enclosure.

  1. Installing MacBook Unibody Model A1342 Dual Hard Drive, Lower Case: step 1, image 1 of 1
    • Remove the eight 4 mm Phillips screws securing the lower case to the MacBook.

  2. Installing MacBook Unibody Model A1342 Dual Hard Drive: step 2, image 1 of 3 Installing MacBook Unibody Model A1342 Dual Hard Drive: step 2, image 2 of 3 Installing MacBook Unibody Model A1342 Dual Hard Drive: step 2, image 3 of 3
    • The lower case is constructed of rubber-coated aluminum. Do not excessively bend the aluminum during removal, as any permanent deformation will cause tolerance issues after reassembly.

    • Slightly lift the lower case near the vent opening.

    • Continue running your fingers between the lower and upper cases until the upper case pops off its retaining clips.

    • The location of these three clips is shown in the third picture.

  3. Installing MacBook Unibody Model A1342 Dual Hard Drive, Battery: step 3, image 1 of 1
    • For precautionary purposes, we advise that you disconnect the battery connector from the logic board to avoid any electrical discharge. This step is optional and is not required.

    • Use the flat end of a spudger to lift the battery connector up out of its socket on the logic board.

    • It may be easier to use your fingernails to lift up on both sides of the connector.

  4. Installing MacBook Unibody Model A1342 Dual Hard Drive, Rear Vent: step 4, image 1 of 1
    • Remove the following screws from the optical drive side of the rear vent:

    • Two 10 mm T8 Torx

    • Two 5.2 mm Phillips

  5. Installing MacBook Unibody Model A1342 Dual Hard Drive: step 5, image 1 of 1
    • Remove the following screws from the port side of rear vent:

    • Two 10 mm T8 Torx

    • Two 5.2 mm Phillips

  6. Installing MacBook Unibody Model A1342 Dual Hard Drive: step 6, image 1 of 1
    • Carefully lift the rear vent out of the upper case.

  7. Installing MacBook Unibody Model A1342 Dual Hard Drive, Optical Drive: step 7, image 1 of 1
    • Remove the single 12 mm Phillips screw securing the top of the rear speaker housing to the upper case.

  8. Installing MacBook Unibody Model A1342 Dual Hard Drive: step 8, image 1 of 1
    • Remove the single 2.2 mm Phillips screw inserted horizontally into the side of the optical drive.

    • This screw is located in a gap within the right speaker assembly, and is visible only from the hinge edge.

  9. Installing MacBook Unibody Model A1342 Dual Hard Drive: step 9, image 1 of 1
    • Use the flat end of a spudger to pry the AirPort/Bluetooth ribbon cable connector up off the logic board.

  10. Installing MacBook Unibody Model A1342 Dual Hard Drive: step 10, image 1 of 1
    • Use the flat end of a spudger to pry the rear speaker connector up off the logic board.

    • Pry up underneath the wires.

    • This connector is very delicate and easily broken.

  11. Installing MacBook Unibody Model A1342 Dual Hard Drive: step 11, image 1 of 1
    • Carefully rotate the rear speaker assembly (with AirPort/Antenna cables still attached) out of the lower case.

  12. Installing MacBook Unibody Model A1342 Dual Hard Drive: step 12, image 1 of 1
    • Use the flat end of a spudger to pry the optical drive connector up off the logic board.

  13. Installing MacBook Unibody Model A1342 Dual Hard Drive: step 13, image 1 of 1
    • Remove the single 4.5 mm Phillips screw securing the optical drive bracket to the upper case near the fan.

  14. Installing MacBook Unibody Model A1342 Dual Hard Drive: step 14, image 1 of 1
    • Remove the two 2.5 mm Phillips screws securing the optical drive to the upper case near the optical drive opening.

  15. Installing MacBook Unibody Model A1342 Dual Hard Drive: step 15, image 1 of 1
    • Lift the optical drive near its connector and pull it away from the upper case to remove it from the computer.

  16. Installing MacBook Unibody Model A1342 Dual Hard Drive, Optical Drive: step 16, image 1 of 1
    • Pull the optical drive cable connector away from the body of the optical drive.

  17. Installing MacBook Unibody Model A1342 Dual Hard Drive: step 17, image 1 of 1
    • Remove the two black Phillips #0 screws securing the small metal mounting bracket. Transfer this bracket to your new optical drive or hard drive enclosure.

  18. Installing MacBook Unibody Model A1342 Dual Hard Drive, Dual Hard Drive: step 18, image 1 of 2 Installing MacBook Unibody Model A1342 Dual Hard Drive, Dual Hard Drive: step 18, image 2 of 2
    • Remove the plastic spacer from the optical bay hard drive enclosure by pressing in on one of the clips on either side and lifting it up and out of the enclosure.

  19. Installing MacBook Unibody Model A1342 Dual Hard Drive: step 19, image 1 of 3 Installing MacBook Unibody Model A1342 Dual Hard Drive: step 19, image 2 of 3 Installing MacBook Unibody Model A1342 Dual Hard Drive: step 19, image 3 of 3
    • Make sure that the hard drive connectors are facing down before placing it into the enclosure.

    • Gently place the hard drive into the enclosure's hard drive slot.

    • While firmly holding the enclosure in place with one hand, use your other hand to press the hard drive into the enclosure connectors.

  20. Installing MacBook Unibody Model A1342 Dual Hard Drive: step 20, image 1 of 2 Installing MacBook Unibody Model A1342 Dual Hard Drive: step 20, image 2 of 2
    • Once the hard drive is snug, reinsert the plastic spacer while holding the hard drive against the bottom of the enclosure.

  21. Installing MacBook Unibody Model A1342 Dual Hard Drive: step 21, image 1 of 2 Installing MacBook Unibody Model A1342 Dual Hard Drive: step 21, image 2 of 2
    • Use two Phillips #1 screws to secure the drive to its enclosure.

  22. Installing MacBook Unibody Model A1342 Dual Hard Drive: step 22, image 1 of 1
    • Attach the optical drive bracket to the new enclosure with two Phillips #0 screws.

    • Reconnect any cables you have removed from the original optical drive onto the optical bay enclosure.

  23. Installing MacBook Unibody Model A1342 Dual Hard Drive: step 23, image 1 of 3 Installing MacBook Unibody Model A1342 Dual Hard Drive: step 23, image 2 of 3 Installing MacBook Unibody Model A1342 Dual Hard Drive: step 23, image 3 of 3
    • Don't ditch that drive! You can still use your optical drive externally with the help of our SATA Optical Drive USB Cable.

    • Align the cable's SATA connector with the drive's port and plug in securely.

    • Plug the USB connector into your laptop and your optical drive is ready for use.

Conclusion

To reassemble your device, follow these instructions in reverse order.

120 other people completed this guide.

Jake Devincenzi

Member since: 04/18/2011

115,552 Reputation

57 Guides authored

10 Comments

when i did i have a gray screen and in the middle i have a question mark in a file and it flashing

Rayan Sait - Reply

You haven't installed and software on the new hardrive. Install some using a boot disk or USB

Jesse Mora -

Hi! I have a big problem... I have MB unibody 09. After install the hdd the MB doesn't switch on, so I reinstall the dvd unit and after try sometimes the laptop starts and at the status bar appears there has no a battery and the fan works very hard.

I find an area near the switch battery ( in the mainboard), that I unplugged to install the hdd, where there is an small chip that takes a very high temperature when I plug the batery connector... So what could be the problem, and what can I do?

I followed step by step so I Don't know where can be the problem... Some help please!

Diego de Vicente Contreras - Reply

Is it possible to remove the optical drive and connect a sata extension cable where it was connected to the motherboard? The sata extension cable would stick out thru the cd entry. this way one could had a sata port to connect external hard drives faster than by the usb 2.0 ports! I don't understand much about electronics so I'm sorry if it's a stupid question.

adridiaspereira - Reply

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