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Old 07-20-2019, 01:12 AM   #1
odamizu
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Join Date: Mar 2015
Device: Kindle Oasis1 & Voyage, iOS
running Catalina and High Sierra on same Mac

I wanted to start a thread for Mac users who are thinking about upgrading to macOS 10.15 Catalina (once it's released), but still want/need to be able to run 32-bit apps or other software that may balk on Catalina.

A discussion in the Calibre forum on Kindle for Mac raises this issue, followed by this suggestion:

Quote:
Originally Posted by tomsem View Post
... Apple allows previous versions of macOS to be virtualized, for precisely the reason that some apps may not be compatible with the latest version.

So why not set up a VM with a working de-DRM environment so you donít have to adapt to changes that the world throws at us? Also makes it much easier to set up on a new computer.
I've also been contemplating this Apple support article on Installing macOS on a separate APFS volume.

Any thoughts and suggestions on different ways to run Catalina and High Sierra (or older macOS) on the same Mac, pros and cons, greatly appreciated.
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