What to do with an Intel iMac after macOS support ends
An iMac that no longer gets macOS updates isn't broken, and its screen is often still excellent. Here's where each model stands, and the realistic options for what to do with it.
Where your iMac stands
Apple said at WWDC 2025 that macOS Tahoe would be the last release for Intel Macs, and macOS 27 runs only on Apple silicon. Some iMacs stopped earlier than that:
| iMac | Latest macOS from Apple |
|---|---|
| 2017 iMac (21.5-inch and 27-inch) | macOS Ventura 13 |
| 2019 iMac and iMac Pro (2017) | macOS Sequoia 15 |
| 27-inch iMac (2020) | macOS Tahoe 26, the last for Intel |
Apple has said Intel Macs will keep getting critical security updates for some time after Tahoe, without giving an end date. New app versions tend to drop older versions of macOS over time, so an iMac on an old release gets gradually harder to use as your main computer.
Keep using it as it is
An old iMac is still fine for browsing, documents and photos, especially if your apps still run. Be more careful once it stops getting security updates: keep it away from sensitive accounts, and don't rely on it for anything you'd mind losing.
Use its screen as a display
If you've moved to, or are thinking about, a Mac mini or MacBook, the iMac's screen can stay in use. The 27-inch 5K and 21.5-inch 4K panels are still sharp by today's standards, and this is the job DispMini is built for.
- Good for: a 2017-or-later iMac alongside an Apple silicon Mac, on a desk where the two can be cabled together.
- Not for: older iMacs, or anyone who wants a plain video input. It needs an app running on each Mac, and the iMac stays on and using power. See what it won't do.
Other ways to do this are in Target Display Mode alternatives.
Install a newer macOS with OpenCore Legacy Patcher
OpenCore Legacy Patcher is an open source project for running newer macOS on older Macs. It can extend an iMac's useful life, but Apple doesn't support it. Some features may not work, and each macOS update can need extra attention. Back up first, and read the project's documentation for your model.
Switch to Linux
A Linux distribution gets you a supported, updated system on Intel hardware, with no cost. It suits browsing, development and home server use. Expect some setup, and check support for your model's Wi-Fi and display before you erase anything. Try it from a USB drive first.
Sell, trade in or recycle it
If you won't use it, passing it on may be the best outcome. Older iMacs still have resale value, and Apple offers trade-in and recycling for many models. Before it leaves your hands, back it up and erase it.
How to choose
| If you… | Consider |
|---|---|
| Still run everything you need on it | Keeping it as it is |
| Have or want an Apple silicon Mac and need a screen | Using it as a display |
| Want current macOS and don't mind some tinkering | OpenCore Legacy Patcher |
| Want an updated system and don't need macOS | Linux |
| Don't have a use for it | Selling, trading in or recycling |
Sources
Apple's compatibility lists for macOS Ventura, macOS Sonoma, macOS Sequoia and macOS Tahoe. 9to5Mac: Apple will end support for Intel Macs. ITdaily: macOS 27 marks the end for Intel Macs. Checked November 2026.