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Can I update from MacOS High Sierra 10:12 to Big Sur

Can I update 2012 iMac Computer currently using software High Sierra. App Store does not include any OS upgrade available.



iMac 21.5″, macOS 10.13

Posted on Jun 21, 2021 7:40 AM

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Question marked as Top-ranking reply

Posted on Jun 21, 2021 7:46 AM

A 2012 iMac can only run as high as Catalina.


Click on this link to read how to get different versions of macOS - hhttps://support.apple.com/HT211683


Before upgrading, back up at least your data in case something goes wrong. See this support document: How to back up your Mac - https://support.apple.com/mac-backup


Check if your old apps will still work with with the OS you want to install - https://roaringapps.com/apps This is particularly critical if you are upgrading to Catalina or newer, as older 32 bit apps will no longer work. To check for those, try this 32 bit application scanner application --> https://www.stclairsoft.com/Go64/



3 replies
Question marked as Top-ranking reply

Jun 21, 2021 7:46 AM in response to aggybabe

A 2012 iMac can only run as high as Catalina.


Click on this link to read how to get different versions of macOS - hhttps://support.apple.com/HT211683


Before upgrading, back up at least your data in case something goes wrong. See this support document: How to back up your Mac - https://support.apple.com/mac-backup


Check if your old apps will still work with with the OS you want to install - https://roaringapps.com/apps This is particularly critical if you are upgrading to Catalina or newer, as older 32 bit apps will no longer work. To check for those, try this 32 bit application scanner application --> https://www.stclairsoft.com/Go64/



Can I update from MacOS High Sierra 10:12 to Big Sur

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