I have a iMac (27 inch, late 2009) OS X El Capitan and I want to update to OS Catalina but my mac won't let me. I can't update to any others as well. Can someone help me?

Processor 2.66 GHz Intel Core i5

Memory 8 GB 1067 MHz DDR3

Version 10.11.6

My mac won't update past 10.11

Is there something I can do?

Posted on Jun 26, 2020 12:57 AM

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Posted on Jun 26, 2020 6:32 AM

There is a difference between updating and upgrading.

What you want to do is upgrade your OS, not update it.


You won't be able to run Catalina or Mojave , but you should be able to instal High Sierra, click on this link.....

https://support.apple.com/en-us/HT208969

2 replies

Jun 26, 2020 6:59 AM in response to Drumkid215

The App Store Updates page only informs you of updates available for the OS you are currently running.

As you are running an older system then you are probably up to date on that system.


If you want to install a newer OS that is called an Upgrade. 


The model and year of your Mac will determine which macOS you can upgrade to,


Please use Safari to access the following link do not use Firefox


How to upgrade to macOS High Sierra - Apple Support


Before upgrading make a full back up of your Mac.


Check that third party apps you use have updates available for the new OS.

https://roaringapps.com

Check that your printers/ scanners etc have updated drivers and software available for the new OS.


Connect your mac to your router via cable rather than rely on WiFi.

Do not use your mac while it is downloading

and do not use any other devices that share the same internet connection.


If the App Store says Open then it is detecting a previous download of the install app

go to the Applications folder locate Install macOS High Sierra.app.

Move it to the Trash, empty the Trash.

Restart, click on the link again, the App Store should say ‘Get' or 'Download'.

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I have a iMac (27 inch, late 2009) OS X El Capitan and I want to update to OS Catalina but my mac won't let me. I can't update to any others as well. Can someone help me?

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