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Mojave installer reports "This volume is not a supported Core Storage configuration."

I just tried to update my iMac Retina 5k 27", late 2014 running High Sierra 10.13.6 to Mojave. The installer started, but claimed very soon:

(This volume is not a supported Core Storage configuration.). The configuration is a fusion drive with HFS+ filesystem. Due to a hard disk failure the original harddisk was replaced by a Samsung SSD with 2TB some time ago by an authorized Apple Service Partner near Munich.

I read that fusion drives are supported by Mojave and would be converted to APFS during installation. So I didn't expect any problem here.

Any idea how to proceed from here?

Thanks a lot

Wolfgang

iMac with Retina 5K display, macOS High Sierra (10.13.6)

Posted on Sep 24, 2018 12:53 PM

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Wolfii Author

Level 1

21 points

Posted on Oct 17, 2018 12:10 PM

The solution stated above worked for me: Create a bootable Mojave installer, use the disk manager there to erase the fusion drive and create a new one with APFS, then install Mojave there. Finally use the Migration assistant to get your data back from Time Machine.

No idea whether Apple is doing anything about it in one of the next Mojave Updates. The affected number of people is low, and as it involved changes to the hardware that Apple might consider unsupported, it might be that we have to live with it.

After all, there is a workaround and it is a one time effort. They will have their reasons to refuse to update such constellations in place, at least they implemented a check for it at the beginning of the installation. Thanks to time machine it is not really a huge problem, it just takes some time.

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31 replies

Oct 17, 2018 9:04 AM in response to Wolfii

One month later, official Mojave release - still does this. Is Apple going to address this or just let hang everyone who had to replace a crashed HD. Maybe we have to wait for Mac OS Sahara?

Has anyone had success doing a reformat or anything radical and then restoring from a full backup?

dialabrain

Level 10

136,151 points

Sep 24, 2018 1:00 PM in response to Wolfii

I think the problem is some Samsung SSD drives do not report themselves as such. This an EVO drive?

Not sure what you can do about it.

Wolfii Author

Level 1

21 points

Sep 24, 2018 1:07 PM in response to dialabrain

System Information says:

Looks pretty normal to me ..

dialabrain

Level 10

136,151 points

Sep 24, 2018 1:12 PM in response to Wolfii

I'm reporting what I have seen on the communities numerous times. How do you think I knew to ask if it was an EVO drive?

Sep 25, 2018 5:12 AM in response to dialabrain

Man you nailed it with Samsung evo.

I have the same problem can’t install it.

And yes I do have Samsung evo ssd.

Sep 26, 2018 10:52 AM in response to Fouad Abbasi

I have the same problem but I have a OWC SSD.

Sep 26, 2018 6:08 PM in response to Mike Retondo

So now what?

Is Apple looking into helping us?

Or did anyone find a work around to make this work?

Sep 26, 2018 8:28 PM in response to Fouad Abbasi

I spent three hours today surfing the net for answers and found nothing. Nothing from Apple. I sent an email to a connected tech journalist in hopes he tries to find answers.

Wolfii Author

Level 1

21 points

Sep 26, 2018 11:36 PM in response to Wolfii

did anybody already try out using a bootable installer?

Sep 27, 2018 5:41 AM in response to dialabrain

I have a OWC SSD

Sep 28, 2018 9:12 PM in response to Mike Retondo

Cool

Try it and let us nnow

Oct 5, 2018 11:05 AM in response to cheartwell

What Mac are you trying to install too? Did booting from USB Mojave then formatting the fusion drive to APFS work?

Oct 13, 2018 1:47 PM in response to Wolfii

Worked very well on Imac Late 2013 fusion with a new Samsung 460 Evo. SSD 2 tb.

Thank you for sharing! 🙂

tomak00

Level 1

11 points

Nov 19, 2018 7:23 AM in response to Wolfii

This worked for me. Thanks!

Sep 27, 2018 5:50 AM in response to Wolfii

It’s definitely an APFS issue. The installer is trying to convert the drive from HFS+. APFS is required for 10.14.

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Mojave installer reports "This volume is not a supported Core Storage configuration."