When I try to install Mojave, I get an error message saying that "This volume is not a supported Core Storage configuration". I had to replace the hard drive on my iMac with an SSD drive. How do I upgrade to Mohave? Is Apple aware of this issue, which many others seems to also be having?
iMac (Retina 5K, 27-inch, Late 2014), iOS 12.0.1, 1 TB solid sate SATA drive
First of all do a full clone of your drive to an external drive, using SuperDuper or CCC. Also have an up to date Time Machine backup.
Make sure your can boot from the clone and works correctly.
Download the Mojave installer (in this case apparently you already have it) and follow the available instructions to create a bootable installer on a thumb drive.
Boot from this thumb drive, erase your internal SSD and install.
You can choose at this point to migrate your user accounts from the clone or do it later by running Migration Assistant from your new Mojave system.
heatherfromashburton wrote:
*Time Machine
There are no volumes on the APFS Container to be used for a Restore. We need an installation first.
FWIW, as I tried explaining on the first page, the Mojave installer does not "like" Samsung EVO drives.
Unfortunately, this may be the case.
Let me know if you want to manually create the APFS Fusion container and volumes to install Mojave.
Yes please. Let's give it a go.
Yes please, let's give it a go.
Hi Loner T
I got to the third command and Terminal couldn't unmount Disk1.
Sorry, I must have missed a step.
Am I heading in the right direction here?
Looks good. Please remember to backup macOS via Time Machine on a regular basis.
The installer functions (unexpectedly) if finds a Container without any volumes (need to create a feature request for Apple engineers 😉 ).
Run (assuming disk2 is the Container)
diskutil apfs addVolume disk2 apfs "Macintosh HD" -reserve 500g
Notice the lines which say
"Erasing disk2s2..."
"Initialized /dev/rdisk2s2 as a 931 GB..."
This means your second command should be
diskutil eraseDisk jhfs+ HDD disk2 (not disk1)
Reboots can and do renumber disks.
Also, this means that the APFS commands also need to use disk2, not disk1.
Can't upgrade to Mojave on iMac with SSD
