A Mac mini can run without a display, keyboard or mouse, but only if you set up remote access first. Apple’s support guide, Set up your Mac mini as a server, puts it this way: “After you’ve set up your Mac mini as a server, you can set it up to run without a display (sometimes called a “headless” setup).” The order matters. Finish first-run setup with peripherals attached, turn on and test remote administration, enable only the services you need, make the machine survive sleep and power cuts, and only then unplug the monitor.
What you need before you start
- The Mac mini, plus a display, keyboard, and mouse or trackpad. Apple says initial setup must be completed with these attached.
- A second computer on the same network (another Mac, or a Windows PC) to administer the mini from.
- A strong login password for the mini’s account.
- An idea of what the server will do. Apple lists media serving, file management, local model hosting and databases as typical server software categories. It does not endorse any specific application, so use the software developer’s documentation for ports and setup.
This guide covers administration from inside your home network. Reaching the mini from outside the home, and router configuration, are outside what Apple’s guide addresses, so they aren’t covered here. Apple’s guide also gives no performance, power-use or storage-speed figures, so none are claimed.
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Step 1: Complete normal setup with peripherals attached
Connect the display and input devices and run through macOS setup as usual. Choose a strong password. Connect both the mini and your administration computer to the same Wi-Fi or wired network, so you can configure and test access before the display comes off.
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Set up at least one route before going headless. They differ in interface, client compatibility and whether the server app has its own tools.
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| Method | Best for | Client notes |
|---|---|---|
| Remote Login (SSH/SFTP) | Command-line administration, file transfer, restarting services | Apple documents SSH and SFTP access. |
| Screen Sharing | Seeing and controlling the graphical desktop | Built in for another Mac on the same network; a Windows PC needs a third-party VNC client. |
| Server app’s own remote tools | Work managed entirely inside one application | Varies by app; follow its documentation. |
Apple does not rank these, so neither will this article. Pick the shell if your tasks are scriptable, the desktop if you rely on graphical apps, or enable both.
Turn on Remote Login and Screen Sharing
Open System Settings > General > Sharing and switch on Remote Login and/or Screen Sharing. Label wording can shift slightly between macOS versions.
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Test from the second computer
Connect from your other computer while the mini still has its display attached. This test is a sensible precaution rather than something Apple’s guide mandates: if it fails, you can still fix it at the desk. Once you have connected successfully, you have a safety net for going headless.
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One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchStep 3: Make the address predictable
Write down the mini’s IP address and the port your server application uses. Apple suggests using DHCP with a manual address so the address doesn’t change over time. Remote connections, shared folders and server clients all depend on that address staying put.
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Step 4: Enable only the sharing services you need
For household files, switch on File Sharing in System Settings > General > Sharing and choose which folders to share. From another Mac, open Finder > Go > Connect to Server and enter the mini’s IP address. Windows access depends on Windows file sharing or SSH.
Apple also documents using a shared folder on the Mac mini as a Time Machine backup destination, which suits a household with several Macs. Leave other services off. Each service you enable opens a port, so unused ones are needless exposure.
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Step 5: Prepare for unattended operation
Apple recommends three settings for a machine nobody is watching:
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- Prevent sleep. A sleeping Mac interrupts running server tasks. Look in the Energy (or Battery/Energy, depending on macOS version) settings in System Settings for options that stop automatic sleeping.
- Turn on the firewall. This is in the Network section of System Settings on current macOS.
- Start up after power loss. Configure the mini to start when power is connected, so it comes back after an outage.
Automatic software updates are optional. Decide deliberately: updates keep the system patched but can restart the machine.
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How the firewall interacts with services
Apple explains that enabling a sharing service opens a specific port for it, and that per-app and per-service access is managed in the firewall options. If a service stops accepting connections after you enable the firewall, check that the firewall permits that app or service. The firewall complements, but doesn’t replace, strong account passwords and sensible network setup.
Step 6: Go headless
With remote administration confirmed, shut down, unplug the display and peripherals, and restart the mini. Then reconnect from your second computer. Screen Sharing from a Mac lets you view and control the desktop, and Apple mentions High Performance Screen Sharing as an option for improving virtual display resolution on the controlling Mac, subject to system requirements.
Step 7: Plan for restarts
A macOS update or a power outage can restart the mini. Apple warns that some server apps need to be relaunched manually unless you configure them to start automatically. Whether that’s possible, and how, depends on the application, so check its documentation. After your first restart, confirm the service came back before you rely on it.
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Quick Recap
Troubleshooting checklist
- Can’t connect remotely: confirm both computers are on the same network and that the mini’s IP address hasn’t changed.
- Service unreachable: check the firewall allows the specific app or service, and that the port matches the one recorded.
- Server task stopped overnight: sleep prevention may not be set.
- Everything is down after a power cut: check that start-up after power is restored is configured, then that the app relaunches.
- Remote access fails entirely: reconnect a display, keyboard and mouse to fix the settings locally.
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