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putnam6 · This post was last modified: 02-10-2026, 10:40 AM by putnam6.

Have a 12-year-old Mac mini that needs updating. I really need to back up, reformat, and reinstall.

It's finding the 3-4 hours retrain and knock it out, find which OS version I should start with...

Used to know where to go and what to do... but it's been years now. Need the quickest way to update OS with minimal down time

Any advice would be greatly appreciated.

[Image: Eu1UQJR.jpeg]

UltraBudgie · This post was last modified: 02-10-2026, 10:50 AM by UltraBudgie.

You should install Linux!

...not really, stick with what you're comfortable with, but with threads like this someone is sure to come along and say it so I thought I would first

A suggestion would be to roll on down to the Apple Store and bring photos of the iMac and ask them and avoid the upsell and see what they say. I suspect you may need the original installation media or need to buy a new copy of the OS.

FlyersFan · 02-10-2026, 10:54 AM

You guys might as well be speaking ancient Greek.
I don't understand any of this stuff. Man .. I"m old! Lol

Roma · 02-10-2026, 11:00 AM

I think the latest supported OS versions are Sequoia (2025) or Tahoe (2026). I would recommend Sequoia as the latter still seems kind of buggy.

I think the issue you'll run into is that your device has an Intel processor and Apple moved away from those a few years ago. I'm not sure what your options would be but Budgie might be right in Linux being the best.

I've found that Apple support is helpful if you call them. They will generally help if you have a current OS (or are trying to upgrade). The problem is going to be the age of the unit. Have you thought about just buying a new unit?

UltraBudgie · 02-10-2026, 11:02 AM

(02-10-2026, 11:00 AM)Roma Wrote: The problem is going to be the age of the unit.

Always thus... always thus...

Kurokage · This post was last modified: 02-10-2026, 01:07 PM by Kurokage.

(02-10-2026, 10:37 AM)putnam6 Wrote: Have a 12-year-old Mac mini that needs updating. I really need to back up, reformat, and reinstall.

It's finding the 3-4 hours retrain and knock it out, find which OS version I should start with...

Used to know where to go and what to do... but it's been years now. Need the quickest way to update OS with minimal down time

Any advice would be greatly appreciated.

Wow, a 12 year old Mac! I didn't know stuff that old still works?
Is it clock work and do you have to wind it??

Joking aside, I do think it should be settling into a retirement home.
https://www.intego.com/mac-security-blog...fe-to-use/

Kurokage · This post was last modified: 02-10-2026, 11:12 AM by Kurokage.

(02-10-2026, 11:00 AM)Roma Wrote: I think the latest supported OS versions are Sequoia (2025) or Tahoe (2026). I would recommend Sequoia as the latter still seems kind of buggy.

I think the issue you'll run into is that your device has an Intel processor and Apple moved away from those a few years ago. I'm not sure what your options would be but Budgie might be right in Linux being the best.

I've found that Apple support is helpful if you call them. They will generally help if you have a current OS (or are trying to upgrade). The problem is going to be the age of the unit. Have you thought about just buying a new unit?

From what I've read I don't think you can install Sequoia or Tahoe on it, the oldest Apple say is 2019.

Here's a link to maybe help with a way forward..
https://macpaw.com/how-to/is-mac-old-to-update

*Quantum12* · 02-10-2026, 11:26 AM

You can run virtual Linux on any old Mac. It works great! I have it on a very old Mac laptop!

putnam6 · 02-10-2026, 11:28 AM

(02-10-2026, 10:49 AM)UltraBudgie Wrote: You should install Linux!

...not really, stick with what you're comfortable with, but with threads like this someone is sure to come along and say it so I thought I would first

A suggestion would be to roll on down to the Apple Store and bring photos of the iMac and ask them and avoid the upsell and see what they say. I suspect you may need the original installation media or need to buy a new copy of the OS.

I love Linux, and you are right, I used to run Linux on another, really, even older MAC with Bootcamp, but that was a decade and a half ago or more. But it's the best fix...if I have the time

I don't need an Apple genius LOL, or should I say I didn't use to need an Apple genius previously #1 and #2 can't afford the time or moola

ATS was super useful back in the day, but I hate going to pro sites. I don't know the vernacular...

There used to be open source sites with old, out-of-date OSs

Last time I checked, the next OS I needed wasn't even available on the Apple site....

UltraBudgie · This post was last modified: 02-10-2026, 11:36 AM by UltraBudgie.

(02-10-2026, 11:28 AM)putnam6 Wrote: There used to be open source sites with old, out-of-date OSs

Last time I checked, the next OS I needed wasn't even available on the Apple site....

Yeah they've really tightened down their "walled garden". Now all the OSs seem to need to phone home for validation or they lock you out, and you can't just avoid updates or run old versions like you used to because nothing will work. I sort of treat Apple products like subscriptions rather than ownership, they require a yearly budget for upgrade or replacement. "You will own nothing and be happy!" is what it is. Lol

Bite the Apple.

I recently "upgraded" to an 8-year-old Thinkpad and Xbuntu Linux, and that works for me, but I've got one of their phones because let's face it, you pretty much have to.