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How can I upgrade High Sierra to Mojave or Catalina?

My 2017 iMacPro is running OS10.13.6. Haven't upgraded as yet because the system is, after a couple years of problems, stable with critical peripherals.


Now, I am getting occasional msgs that the OS is incompatible with certain products, such as Logic remote. So, I need to upgrade, but I cannot upgrade to OSX11 because several of the critical peripherals I use are not yet compatible with it. So, I need to upgrade to Mojave or Catalina, and can find no way to do this.


On the App Store, I get the message that the files cannot be found. What can I do?


This is a really bad situation in which Apple has again obsoleted a range of products but it seems this time, there is no solution. Can this be true?


-A

iMac Pro, 10.13

Posted on Apr 13, 2021 10:24 AM

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Question marked as Top-ranking reply

Posted on Apr 13, 2021 10:39 AM

Apple prefers folks be running the current release.


Running older versions involves increasing effort on the user to prepare and to maintain that configuration.


For the older upgrades, see > How to get old versions of macOS - Apple Support


Download the chosen macOS upgrade installer using (only) Safari.


Catalina requires all apps be 64-bit. Use Go64 to find existing 32-bit apps, and then update, or replace, or retire the 32-bit apps. Microsoft Office 2011 and earlier, for instance, will not work on Catalina and later, being that they are 32-bit apps.


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4 replies
Question marked as Top-ranking reply

Apr 13, 2021 10:39 AM in response to Alfred S Deerfield

Apple prefers folks be running the current release.


Running older versions involves increasing effort on the user to prepare and to maintain that configuration.


For the older upgrades, see > How to get old versions of macOS - Apple Support


Download the chosen macOS upgrade installer using (only) Safari.


Catalina requires all apps be 64-bit. Use Go64 to find existing 32-bit apps, and then update, or replace, or retire the 32-bit apps. Microsoft Office 2011 and earlier, for instance, will not work on Catalina and later, being that they are 32-bit apps.


Apr 13, 2021 2:18 PM in response to MrHoffman

Thank you. I did resolve the problem with the help of Apple support, who provided a copy and paste link that worked, to get to Catalina. I have downloaded it, installed it, and all is well.


Mr. H- Many thanks for the input. I'll read your reply a couple times as there seems to be a lot of info there! That said, it is fine for Apple to "prefer" that everyone use their newest and best, but when they obsolete other software, drivers, or peripherals which takes down a recording system, I just can't do it Apple's way.


Thanks, again.

Apr 13, 2021 2:35 PM in response to Alfred S Deerfield

Alfred S Deerfield wrote:

Mr. H- Many thanks for the input. I'll read your reply a couple times as there seems to be a lot of info there! That said, it is fine for Apple to "prefer" that everyone use their newest and best, but when they obsolete other software, drivers, or peripherals which takes down a recording system, I just can't do it Apple's way.


I understand enterprise computing and production environments. That means IT (you, in this case) gets to accept the responsibility of not upgrading pretty much anything, of caching installer kits and app installers and the rest, of caching spare parts, and then dealing with the issues that increasingly arise as most computers just aren't and just can't be as isolated anymore; apps are increasingly networked, and network security means connection upgrades, and connection upgrades mean system upgrades. I'd like to still live in the buy-it-and-run-for-a-decade era, but... we don't. We're headed for software as a service everywhere, and hardware as a service for an increasing number of applications.

How can I upgrade High Sierra to Mojave or Catalina?

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