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Introdução

Follow the steps in this guide to upgrade or replace the SATA hard drive in a 21.5" Retina 4K 2019 iMac. Note that if you are upgrading your drive, you will need to clone your existing hard drive onto the replacement prior to performing this upgrade to keep your files and operating system.

Some images in this guide use an older iMac, which has minor visual differences. These differences do not affect the repair procedure.

    • With the hinge free to move, the iMac will be unbalanced and hard to work on. Place an iMac service wedge, in the stand to stabilize the iMac.

    • If you are using the iFixit cardboard service wedge, follow these assembly directions to put it together.

    • Before beginning any work on your iMac: Unplug the computer and press and hold the power button for ten seconds to discharge the power supply's capacitors.

    • Be very careful not to touch the capacitor leads or any exposed solder joints on the back of the power supply. Only handle the board by the edges.

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    • Starting on the left side of the display, near the power button, insert the iMac Opening Tool into the gap between the glass panel and the rear enclosure.

    • The hub on the iMac Opening Tool will keep you from pushing the wheel in too far. If using a different tool, insert no more than 3/8" into the display. Otherwise, you risk severing antenna cables and causing serious damage.

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    • Use the tool like a pizza cutter—roll it along the gap, cutting the foam adhesive in between the frame and display.

    • Be sure to always push with the cutting wheel forward. If you pull, the wheel might get pulled out of the handle.

    • Run the tool up along the left side of the display.

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    • Continue running the tool up around the top left corner.

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    • Cut the adhesive along the top left of the display.

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    • Continue along the top of the display.

    • You may want to run the tool back and forth a few times to ensure you completely cut through the adhesive.

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    • Push the tool around the top right corner of the display.

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    • Push the tool down along the right side of the display.

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    • Finish pushing the opening tool to the bottom of the right side of the display.

    • At this point, you'll want to run the tool back around the entire display, to ensure you cut as much adhesive as possible.

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    • While the opening tool cut most of the adhesive, the display will still be slightly adhered to the case. A plastic card will be necessary to free up the last of this adhesive.

    • Set the iMac face-up on a table.

    • Starting from the top right corner of the iMac, wedge a plastic card between the display and frame.

    • Be careful not to insert the plastic card more than 3/8", or you may damage internal components.

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    • Gently twist the plastic card sideways to create a gap between the display and frame.

    • Move slowly and be careful not to stress the display glass too much—you only need to make a gap of about 1/4".

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    • Slide the card toward the center of the display to cut any of the remaining adhesive along the top right corner of the iMac.

    • Be sure to stop before the iSight camera, or you may damage it.

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    • Wedge the plastic card into the top right corner once again, and leave it there to prevent the adhesive from resticking.

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    • Insert a second plastic card into the gap between the display and frame near the top left corner of the iMac.

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    • Gently twist the card upward, slightly increasing the space between the display and frame.

    • As with the other side, twist slowly to allow the adhesive time to separate, and be careful not to over-stress the display glass.

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    • Slide the plastic card toward the center.

    • Stop sliding just before the iSight camera to avoid damaging the camera.

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    • Wedge the plastic card back into the top left corner.

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    • With both plastic cards inserted as shown near the corners, gently twist the cards sideways to increase the gap between display and case.

    • If there are any sections that seem to stick and won't separate, stop twisting and use one of the cards to cut the remaining adhesive.

    • Begin to lift the top of the display up from the frame.

    • Only lift the display a few inches—the display data and power cables are still connected to the logic board.

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    • Lift the display up enough to have easy access to the connector, but not so much that you stretch the cables and stress their connections (about 8").

    • Hold the display with one hand while using your other hand to unplug the display power cable.

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    • Continuing to support the display with one hand, flip up the metal retaining bracket on the display data cable.

    • Carefully pull the display data cable from its socket on the logic board.

    • Be sure to pull the display data cable connector straight out of its socket, keeping it parallel to the motherboard, to avoid damaging it.

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    • Lift the display up to a near-vertical position.

    • At this point there is still a strip of adhesive along the bottom of the display that will hold the display to the frame like a hinge. You can loosen this adhesive by working the display up and down a few times.

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    • If necessary, a plastic card can be used to cut any remaining sections of the bottom adhesive strip.

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    • Lift the display up from the frame and remove it from the iMac.

    • It may be necessary to slowly lift from one side to peel against the remaining adhesive.

    • Be very careful handling the display—it's big, heavy, and made of glass.

    • After the adhesive is cut, it cannot be used to re-seal the display in place. Follow this guide to replace the adhesive strips that secure the display to the rear enclosure.

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    • Remove the following T10 Torx screws securing the hard drive brackets to the iMac:

    • Two 21 mm screws

    • One 9 mm screw

    • One 27 mm screw

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    • Remove the left and right hard drive brackets from the iMac.

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    • Lift the hard drive from the edge nearest the logic board and pull it slightly out of its recess.

    • The hard drive is still attached by its SATA cable; do not attempt to fully remove it from the iMac yet.

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    • Use a spudger to disconnect the single SATA cable by prying it gently away from the hard drive.

    • Remove the hard drive assembly from the iMac.

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    • Peel the rubber bumper off one side of the hard drive.

    • Repeat for the other side.

    • When installing a new drive, it's helpful to use double-sided tape to stick the bumpers to your new drive.

Conclusão

Compare your new replacement part to the original part—you may need to transfer remaining components or remove adhesive backings from the new part before installing.
To reassemble your device, follow the above steps in reverse order.
Take your e-waste to an R2 or e-Stewards certified recycler.
Repair didn’t go as planned? Check out our Answers community for troubleshooting help.

9 outras pessoas concluíram este guia.

Adam O'Camb

Membro desde: 11/04/2015

169.975 Reputação

418 Guias de autoria

3 Comments

Great guide! I had a failing fusion drive and upgraded to an SSD and got the 64gb RAM maxxer kit while I was in there. everything went really smoothly and my computer is so much faster. My only mistake was that I didn’t clone the HDD before taking the imac apart. I had to put it all back together with the old drive, clone to the SSD, take it all apart again, replace the SSD, put it back together to verify that it was even gonna work, then take it all apart again to finish up the RAM upgrade. But… it’s all good. Thanks for the great guide!

Mark Pruett - Responder

You cannot replace a conventional “Hard drive” in this model iMac.

DO NOT attempt this upgrade until you understand two important facts:

1) The drive in your iMac MUST BE a ‘SSD’ or a ‘Fusion drive’. If it is a conventional HDD, stop. There is NO PCIe CONNECTOR inside to connect a new blade drive.

2) Click on the link in this iFixit for "clone your existing hard drive". All the more recent Apple CPU's are now classified as 'T2 secure chips'. Cloning is no longer straightforward, e.g. "Hold down Opt key during restart, etc." You have to bypass/disable certain security features on your iMac, and this is somewhat of a lengthy process. If you do not, when you try to boot from an external drive you will see nothing but a black screen.

Excellent step by step guide, thank you. I will definitely refer to this when I upgrade my 250G SSD which, BTW, is WAY too small. There's only 100G left, and only apps are Logic Pro X, Numbers/Keynote/Pages, iTunes & a few utilities... hardly any actual work

Anti Spam - Responder

Thanks for the information given. One follow-up question having a SSD-only 2019 iMac: Is the 2.5" harddrive enclosure and Sata-Cable included in this one? I would like to a) upgrade the PCIe-SSD but also put in a slightly bigger 2.5" SSD in place of the - currently non-existent - harddrive. Knowing Apple I am pretty sure that they did not include the Harddrive enclosure in SSD-only 2019 iMacs - plus using proprietary Sata connectors probably >.<

Joachim Schneider -

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