Skip to main content

A2116 / 2019 / 3.6 GHz quad-core i3, 3.0 GHz 6-core i5, or 3.2 GHz 6-core i7 processor. Released March 19, 2019.

78 Questions View all

Can I replace the Fusion Hard drive with an SSD on a 2019 iMac? and...

Will it cause any issues with the way the existing Fusion flash blade recognises or communicates with the new SSD?

Is it necessary I buy and connect a Thermal Sensor?

Can I buy any SSD? or are there some which cause conflicts?

I appreciate any help.
Thank you

Answer this question I have this problem too

Is this a good question?

Score 1
Add a comment

1 Answer

The blade SSD is used as a cache drive to the 2.5" HDD when the two are setup as a Fusion Drive set.

When you remove the HDD replacing it with a SSD you will sever the Fusion Drive so the Blade SSD will just sit unused. The first versions of Fusion Drive used a 1TB HDD and had a 32 GB SSD for the cache drive, after August 4 it had a 256 GB SSD.

If you have the larger blade SSD I would recommend reformatting making it the OS boot drive as the PCIe/NVMe interface is faster than the SATA III (6.0 Gb/s). Sadly the small 32 GB drive is not large enough to do much of anything.

Here's the guide you'll need to follow to replace the HDD: iMac Intel 21.5" Retina 4K Display 2019 Hard Drive Replacement

If you can I would upgrade the blade SSD to something larger 256 is a good size for writing and simple web use with the macOS on it. Going with 512 or larger offers a lot performance! Here's the guide for it iMac Intel 21.5" Retina 4K Display (2017) Blade SSD Replacement

Otherwise don't worry about the blade SSD, just let it sit unused if you go with the 2.5" SSD.

iMac Intel 21.5" Retina 4K Display (2017) Blade SSD Image

Guide

iMac Intel 21.5" Retina 4K Display (2017) Blade SSD Replacement

Difficulty:

Moderate

1 - 3 hours

iMac Intel 21.5" Retina 4K Display 2019 Hard Drive Image

Guide

iMac Intel 21.5" Retina 4K Display 2019 Hard Drive Replacement

Difficulty:

Moderate

30 minutes - 1 hour

Was this answer helpful?

Score 0
Add a comment

Add your answer

James Rice will be eternally grateful.
View Statistics:

Past 24 Hours: 1

Past 7 Days: 9

Past 30 Days: 27

All Time: 169