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SpyderRt Author

Level 1

4 points

upgrading from High Seirra

how to upgrade from High Sierra OS

iMac Line (2012 and Later)

Posted on Mar 15, 2022 11:37 AM

Top-ranking reply

Niel

Level 10

733,307 points

Posted on Mar 15, 2022 11:43 AM

Back up your data, check your applications for compatibility, and depending on which iMac model you have, click on Mojave, Catalina, Big Sur, or Monterey. If you get a Mac App Store preview page, change the https at the beginning of its address to macappstore.

Catalina and newer won't run 32-bit software; download and use Go64 to scan for it. To look up other programs, click here.

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upgrading from High Seirra

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