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How to upgrade an iMac

Replacing the Fusion Drive with both a SSD and an harddisk

July 30, 2020 -

This month I did an attempt to upgrade my 27-inch iMac 5K. I wanted to replace the fusion drive with a SSD and a large hardisk. In addition I decided this was a good time to upgrade the RAM memory as well, maxing it out at 64GB. I was on a mission to create the ultimate iMac, but things didn't go to plan!

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The RAM hatch pops open using the secret button inside the power connector
The RAM hatch pops open using the secret button inside the power connector
Disconnecting the headphone cable
Disconnecting the headphone cable
A (nearly) empty iMac enclosure
A (nearly) empty iMac enclosure
The factory installed 32GB SSD that we're going to replace
The factory installed 32GB SSD that we're going to replace
Oops: the newly installed SSD drive is not correctly fitted in the PCIe slot! An expensive mistake!
Oops: the newly installed SSD drive is not correctly fitted in the PCIe slot! An expensive mistake!
YES, it works! The new logic board accepted keyboard input and allowed me to proceed with macOS installation
YES, it works! The new logic board accepted keyboard input and allowed me to proceed with macOS installation

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