My fusion drive has split.
My fusion drive shows as 2 drives and when I try to repair it through disk utility, I get the following error message: BTW I have installed MacOS on the HDD and left the SSD empty. It runs very slowly.
Kevins-iMac:~ kevinheath$ diskutil resetFusion
Internally-located hardware disk device known to the currently-running macOS:
Volumes exported by partitions or storage systems hosted on the above device:
Flash Storage (disk2s1)
iMac HD (disk3s1)
Your computer must have exactly 1 solid-state and 1 rotational disk drive