Upgrading a 2013 iMac from High Sierra to Catalina
Hi,
I have an iMac 27-inch, late 2013, currently running on High Sierra (10.13.6). I
understand that the latest OS an iMac of this vintage can run is Catalina (apparently late 2012 models should be capable of updating to Catalina). My updates has not given me an option to update my OS to either Mojave or Catalina. What should I do? Thanks.
Cheers,
Grant