CAN I UPGRADE MY IMAC (21.5-inch, Mid 2011)
Hello,
I currently have an IMAC (21.5-inch, Mid 2011) running on OS X EL CAPITAN VERSION 10.11.6 and would like to know if it is possible for me to upgrade? Thanks,
The last version of Mac OS that will run on a 2011 iMac is High Sierra 10.13.6. You can get it by clicking:
How to get old versions of macOS