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How to replace the harddisk in 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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Today's iMac (in two sizes)
Today's iMac (in two sizes)
LUCKY ME! Found a perfectly matching replacement logic board - in new old stock condition!
LUCKY ME! Found a perfectly matching replacement logic board - in new old stock condition!
iMac ad - note the text emphasising to get you online in 10 minutes
iMac ad - note the text emphasising to get you online in 10 minutes
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
After installing the new RAM, I powered on my iMac to see if the new modules worked - they did!
After installing the new RAM, I powered on my iMac to see if the new modules worked - they did!
Work in progress: most parts removed, the logic board remaining
Work in progress: most parts removed, the logic board remaining

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