Can I update OS High Sierra on a mid 2014 iMac
Just want to know if I can update the OS on my mid 2014 iMac now using High Sierra
iMac 21.5″, macOS 10.13
Question marked as
A mid 2014 iMac can be upgraded to the latest version of Catalina 10.15.7 or to Big Sur macOS 11 but no later. See: How to download and install macOS - Apple Support
Be aware that if you upgrade to Catalina 10.15 or later you will also need to update any non-Apple 32-bit apps. See: https://www.stclairsoft.com/Go64/
or
https://www.macworld.com/article/232735/how-to-check-if-mac-software-is-32-or-64-bit.html