Q: Fusion drive problem

Do you have a Time Machine backup? Maybe restore to factory...

Gapti wrote:

 

I have a imac 5k 27 inch which i have a fusion drive drive installed at purchase.

 

I have some how seperated the drive into a ssd and normal hdd. Could you list the steps to get this drive back as a fusion drive.

You should be aware fixing a Fusion Drive will erase it's contents. Hopefully you have a back up. That being said…

Mac mini (Late 2012 and later), iMac (Late 2012 and later): About Fusion Drive - Apple Support

Click the link.