imac update from el capitan

Hello, toshiafromboise.

Yes, you can bring the late-2012 iMac up to High Sierra. I suggest you may as well bring it p to Mojave 10.14.

How to Upgrade to  macOS 10.14 Mojave:

These Mac models are compatible with macOS Mojave:

• MacBook (Early 2015 or newer)

• MacBook Air (Mid 2012 or newer)

• MacBook Pro (Mid 2012 or newer)

• Mac mini (Late 2012 or newer)

• iMac (Late 2012 or newer)

• iMac Pro (2017)

• Mac Pro (Late 2013; Mid 2010 and Mid 2012 models with a recommended Metal-capable graphics card: https://support.apple.com/en-us/HT208898

For details about your Mac model, click the Apple  icon at the top left of your screen and choose About This Mac.

❗️– IMPORTANT! – Backup your data. (You’ve been warned.)

Learn How to Back up your Mac with Time Machine:

https://support.apple.com/en-us/HT201250

📚 – Check Compatibility of your Mac with newer versions of macOS.

https://support.apple.com/en-us/HT211683

✅ - Download the macOS 10.14 Mojave upgrade installer here:

https://itunes.apple.com/us/app/macos-mojave/id1398502828?mt=12

(Don’t use FireFox for this link)

The download will place the "Install macOS Mojave" application in the Applications folder. Double-click the installer to begin the upgrade process.