Will Apple ever support switching between OS's?

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Level 1

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Will Apple ever support switching between OS's?

I wonder if it would ever be possible to switch between other MacOs's from past decades or just a simple downgrade (ex: from Sonoma to X snow leopard). I think that Mac would be powerful enough one day to be able to change the actual OS somehow. I think it would be pretty interesting, But I also think that we can already kind of do that with certain 3rd-party themes, but I'm not sure, which is why I'm asking y'all a question. It could b Kind-of possible to switch between certain OS's like 15-14 but I think it would be very cool to have an emulated version of the original Macintosh software to test out and then switch to another.

MacBook Pro (M3, 2023)

Posted on Jan 5, 2025 4:29 PM

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Answer 1

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g_wolfman

Level 4

3,502 points

Jan 5, 2025 5:41 PM in response to marmaralm

You can install old versions of macOS in virtual machines. You can create APFS volumes on your drive and install old versions of macOS in those and have a multiboot system where you choose the OS at startup. If the OS version is too old, you can partition your drive and install the old OS X in a HFS+ partition.

I'm not sure what else you might be looking for - but if you mean you want to have a single filesystem with your user data and boot multiple OS that all use it, that is basically impossible. The newer OS will make changes that would make it impossible for old OS to access the file system without major problems (or corruption of the file structures). macOS versions are not just "themes", they often make significant changes to the system and its data structures.

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Answer 2

Jan 7, 2025 7:42 AM in response to marmaralm

There are many options for this:

as g_wolfman said, you can install any OS from Snow Leopard Server up to recent times using Virtual Machines, that you can set up with Parallels (paid-for), VMWare (now free), or VirtualBox (free)
from the emaculation website you can get the software to set up Sheepshaver (for Mac OS 7, 8 and 9), or Basilisk (System 1 to System 7)
or you can even run some old systems online, where I found NextStep, for example

All these options run within your current OS so there is no need to 'switch'. And the VMs are actual OS X (etc) installations, not emulators.

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Will Apple ever support switching between OS's?

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