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Model A1419 / EMC 3070 / Mid 2017 / 3.4, 3.5 or 3.8 GHz Core i5 or 4.2 GHz Core i7 Kaby Lake Processor (ID iMac18,3) / Retina 5K Display. Benutze die Anleitungen des iMac Intel 27" Retina 5K Display (Ende 2014 & 2015), da das Gerät sehr ähnlich ist.

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I can’t split my fusion drive

I am trying to split the fusion drive in my 1tb iMac so I can replace the HDD with a 2TB Samsung ssd and use that as my boot drive instead of the blade ssd. I followed the guide that was suggested as well as others and none have worked.


Errors:

https://imgur.com/a/VApe20z

here is my previous post here about it;

Replacing the Fusion HDD with a SATA SSD?

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Let’s see if we can figure things out. First lets get a snapshot of Disk Utility. Make sure you alter the view to show All Devices in the top left corner of the menu bar. On the left column you should see your physical drives. Click on the top one and expand the tabs. Take a snapshot at each layer container and then the volume. Do the second drive in the same way. Make sure you capture the full window each time posting them here for us to see Bilder zu einer vorhandenen Frage hinzufügen

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Okay I have added the photos to the post

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@chemicalsam - Looks like you have two partitions on the HDD! One called 'MacintoshHD' and a second called 'MacintoshHD - Data' It looks like 'MacintoshHD' is not part of the Fusion Drive set and is your OS drive, which is odd! That could explain why your system is so slow! As you are not leveraging the SSD at all for the OS! I think thats why you can't break it as its not part of the Fusion Drive.

At this point I think the smarter direction is just making a full TimeMachine backup of your MacintoshHD-Data drive partition. And just restore after you've switched things out.

von

After looking up the two partitions it seems to be a completely normal drive behaviour on Catalina. https://discussions.apple.com/thread/250...

von

@chemicalsam - APFS is a moving target ;-{

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Sam wird auf ewig dankbar sein.
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