Updating to Catalina
Hello,
I have just been gifted an iMac.
It.s Model no is iMac 11.2
It's now on High Sierra as far as I can update.
Current version 10.13.6.
I would like to go on to Catalina, but keep getting messages saying this is not possible.
Please can I get some advice on how best to proceed, or is Cataloina not possible for this Model and version?
Thank you.