📰 Newsroom Update: Apple announces Apple Retail expansion in the Kingdom of Saudi Arabia

Apple is also expanding the coed Apple Foundation Program to enhance learning opportunities for more students at the Apple Developer Academy. Learn more >

You can make a difference in the Apple Support Community!

When you sign up with your Apple Account, you can provide valuable feedback to other community members by upvoting helpful replies and User Tips.

Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

dobob Author

Level 1

11 points

My iMac is from 2009, so I can't upload Big Sur. What is the one before the newest?

I would like to get the IOS after High Sierra. Can I safely do that?

iMac, macOS 10.13

Posted on Sep 12, 2021 5:59 PM

Top-ranking reply

BobTheFisherman

Level 10

81,781 points

Posted on Sep 12, 2021 6:06 PM

Catalina is the OS before Big Sur but your 2009 computer is not compatible with that.

Mojave is the OS prior to Catalina but your 2009 computer is not compatible with that.

High Sierra is the OS before Mojave. Your late 2009 iMac is compatible with High Sierra.

View in context

My iMac is from 2009, so I can't upload Big Sur. What is the one before the newest?

Similar questions