# Mac Won't Start or Keeps Freezing: Safe Mode and Recovery Steps

> Troubleshoot a Mac that will not start or keeps freezing: force quit, restart, safe mode, Disk Utility First Aid and macOS Recovery, with the steps for Apple silicon and Intel Macs.

Source: https://www.epifive.com/blog/mac-wont-start-or-freezes-safe-mode-recovery · Published 2026-10-28 · EpiFive

## Key takeaways

- Safe mode helps you tell whether software that loads at startup is causing the problem, and Safe Boot shows in the menu bar when it is on.
- Apple silicon and Intel Macs use different start-up methods, so check which chip you have in Apple menu, About This Mac.
- Disk Utility First Aid is run from macOS Recovery when the startup disk is affected, working up from volumes to containers to the device.
- Back up before repairing or erasing, because Disk Utility might not recover damaged files and erasing deletes data.
- If the Mac will not start after these steps or the disk cannot be repaired, the Mac or its storage may need service.

If a Mac will not start or keeps freezing, work through these steps in order: force quit a frozen app and restart, unplug accessories, start in safe mode to see whether startup software is the cause, then use macOS Recovery to run Disk Utility First Aid on the startup disk. How you enter safe mode and Recovery differs between Apple silicon and Intel Macs, and the steps for both are below.

## Who this is for and what you will have at the end

This is for Mac owners and office staff whose MacBook, iMac or Mac mini freezes, restarts, hangs on the Apple logo or will not reach the desktop. You will end with a clear order of checks, the key steps for each chip type, and a way to decide whether the problem is software, the startup disk or hardware that needs service. The steps follow Apple's support pages. Where a step could lose data, it says so.

## Step 0: Find out which type of Mac you have

The startup steps differ by chip. If the Mac works, choose Apple menu, About This Mac. A Chip entry, such as an Apple M-series chip, means Apple silicon. A Processor entry with an Intel name means an Intel Mac. If it will not start, check the label on the Mac or the original box, or the purchase record.

## Step 1: Quick checks

1. **Force quit a frozen app.** If only one app is stuck, choose Apple menu, Force Quit, select the app and force quit it. Apple warns that you might lose unsaved changes.
2. **Restart.** Choose Apple menu, Restart. If the Mac does not respond, press and hold the power button until it shuts down, then press it again to turn the Mac on.
3. **Remove what you added.** Disconnect printers, drives, hubs and other peripherals you recently connected. Apple's guidance on freezing apps suggests unplugging devices you just connected and uninstalling third-party plug-ins or add-ons.
4. **Check for updates.** If the Mac reaches the desktop, install available macOS and app updates, and make sure your apps are compatible with your macOS version.
5. **Check recent hardware changes.** If you recently added memory, make sure it is compatible and installed correctly. Apple points to its hardware diagnostics for this.

If the Mac starts normally after these steps and stays stable, you are done. If it freezes again or will not start, continue.

## Step 2: Start in safe mode

Apple describes safe mode as a way to tell whether a problem is caused by software that loads when your Mac starts. Starting in safe mode can show you whether the Mac is stable without that software.

### Apple silicon

1. Choose Apple menu, Shut Down, and wait until the screen is black and the lights are off. If the Mac is frozen, hold the power button until it shuts down.
2. Press and hold the power button until startup options appear.
3. Select a volume, for example Macintosh HD.
4. Hold Shift, then click Continue in Safe Mode.
5. The Mac restarts. At the login window, look for Safe Boot in the menu bar.

### Intel

1. Turn on or restart the Mac, then immediately hold Shift until the login window appears.
2. Log in. You may be asked to log in again.
3. On the first or second login window, look for Safe Boot in the menu bar.

If the Shift key is not recognised on an Intel Mac, try the built-in keyboard on a laptop, or a wired or Mac-compatible keyboard, as Apple advises for Recovery key combinations.

### Confirm you are in safe mode

Hold Option and choose Apple menu, System Information. Select Software in the sidebar and read the Boot Mode value. Safe means safe mode is on, and Normal means it is off.

### What to do in safe mode

- If the freezing stops, the cause is probably something that loads at startup, such as a login item, an extension or a recently installed app. Remove or update recently installed software and check your login items.
- If the Mac still freezes, the cause may be the disk, macOS itself or hardware, so continue to Step 3.
- To leave safe mode, restart the Mac normally without holding any keys. Apple's safe mode page does not describe leaving it, so restarting normally is the usual way, and you can confirm with System Information that Boot Mode shows Normal.

## Step 3: Start in macOS Recovery

macOS Recovery has tools for repairing the startup disk, restoring from backup and reinstalling macOS. Apple lists these utilities: Restore from Time Machine, Reinstall macOS, and Disk Utility for repairing or erasing the startup disk.

### Apple silicon

1. Shut down. If it will not shut down normally, press and hold the power button until it turns off.
2. Press and hold the power button until you see Loading startup options or the Options icon, then release.
3. Click Options, then Continue.
4. If asked, select your startup disk, for example Macintosh HD, and click Next.
5. If asked, select a user whose password you know, click Next and enter the password.

### Intel

1. Shut down. If it will not shut down normally, hold the power button until it turns off.
2. Press and release the power button, then immediately hold Command and R until you see an Apple logo or a spinning globe.
3. If asked, choose a Wi-Fi network or connect a network cable.
4. If asked, select your startup disk and click Next, then select a user and enter the password.

### If Recovery will not open

- On an Intel Mac, try Option-Command-R or Shift-Option-Command-R to force Internet Recovery. Apple notes these also change which macOS version can be reinstalled.
- A globe with a warning symbol means Internet Recovery failed. Apple says errors such as -2001F, -2002F and -2003F usually relate to your network, so check your connection, try Ethernet or a different network, or try again later.
- On an Intel laptop, use the built-in keyboard. With an external keyboard, wait a few seconds before pressing keys.
- If the Mac is set to start up from Windows with Boot Camp, set it to start up from macOS, then restart.
- If you see a blank screen, a question mark, a lock or an exclamation point, Apple has a separate article for a Mac that does not start up all the way.

## Step 4: Repair the disk with Disk Utility

Apple's steps for repairing a storage device:

1. **Back up first** if you can. Apple says Disk Utility might not recover damaged files.
2. Open Disk Utility. If you are repairing the startup disk, or the Mac will not fully start, open it from macOS Recovery by selecting Disk Utility in the list of utilities and clicking Continue. Otherwise find it in the Utilities folder in Applications.
3. Choose View, Show All Devices, if it is available.
4. Select the last volume on the device, click First Aid, then click Run (or Repair Disk). If the button is dimmed, skip that item. Enter your administrator password if asked.
5. Work up the sidebar. Run First Aid on each volume and volume group, then each container, and finally the device itself.
6. Quit Disk Utility. If you used Recovery, restart from the Apple menu.

### If First Aid reports errors it cannot repair

Apple recommends erasing (formatting) the disk in Disk Utility. Erasing removes the data on it, so only do this with a backup you have checked, and expect to reinstall macOS and restore your data afterwards. Apple links a separate article for the erase process.

### If the disk does not appear

Apple says to shut down, unplug nonessential devices and try again. For an external drive, check the cable, connections and power. If the internal disk still does not appear, the Mac or its storage might need service.

## Step 5: Restore or reinstall

From the macOS Recovery utilities list:

- **Restore from Time Machine** if you have a Time Machine backup and want your files and settings back.
- **Reinstall macOS** if the system is damaged. Reinstalling is a bigger step, so first make sure you have a backup of anything you cannot replace.

Follow the on-screen instructions, and keep the Mac plugged in and connected to the network.

## Troubleshooting

| Symptom | What to try |
| --- | --- |
| One app freezes | Apple menu, Force Quit, then update or reinstall the app. |
| Whole Mac unresponsive | Hold the power button until the Mac turns off, wait, and turn it on again. |
| Stable in safe mode, unstable normally | Look at login items, recently installed software and third-party extensions. |
| Hangs before the login window | Try safe mode, then macOS Recovery and First Aid. |
| Recovery shows a globe with a warning symbol | Internet Recovery failed. Check the network and try again. |
| Disk not listed in Disk Utility | Shut down, unplug extras, try again. The Mac or the drive may need service. |
| First Aid reports errors it cannot repair | Back up if possible, then erase and reinstall, or arrange service. |

## When to arrange service

If the Mac will not turn on at all, First Aid cannot repair the disk, the disk does not appear, or freezes continue after a fresh macOS install, the problem may be hardware. Book a repair with Apple or an authorised service provider, and keep your backup safe.

## Prevention checklist

1. Keep regular backups, for example with Time Machine.
2. Install macOS and app updates.
3. Keep some free space on the startup disk.
4. Remove software you no longer use.
5. Note your chip type and the recovery steps for it.

## Summary checklist

1. Force quit, restart and unplug accessories.
2. Start in safe mode. On Apple silicon, use the power button and Shift with Continue in Safe Mode. On Intel, hold Shift at startup.
3. Check whether the problem goes away.
4. Start in macOS Recovery and run First Aid in the order volumes, containers, device.
5. Back up before repairing or erasing.
6. Restore from Time Machine or reinstall macOS if needed.
7. If nothing works, arrange service.

## References

- Start up your Mac in safe mode, Apple Support (Mac User Guide): https://support.apple.com/en-gb/guide/mac-help/mh21245/
- How to start up from macOS Recovery, Apple Support: https://support.apple.com/102518
- How to repair a Mac storage device with Disk Utility, Apple Support: https://support.apple.com/en-us/102611
- If an app freezes or quits unexpectedly on Mac, Apple Support (Mac User Guide): https://support.apple.com/en-gb/guide/mac-help/mchlp2579

## Frequently asked questions

### How do I start a Mac in safe mode?

On an Apple silicon Mac, shut down, press and hold the power button until startup options appear, select a volume, then hold Shift and click Continue in Safe Mode. On an Intel Mac, turn it on or restart it and immediately hold Shift until the login window appears. Look for Safe Boot in the menu bar to confirm.

### How do I open macOS Recovery?

On Apple silicon, shut down, then press and hold the power button until Loading startup options appears, and click Options, then Continue. On an Intel Mac, press the power button and immediately hold Command and R until you see an Apple logo or a spinning globe. You may be asked to choose a startup disk and enter a password.

### How do I repair my Mac startup disk?

Back up your data if you can, start in macOS Recovery and open Disk Utility. Choose View, Show All Devices, then run First Aid on each volume, then each container, then the device. If Disk Utility finds errors it cannot repair, Apple recommends erasing the disk, which removes its data.

### What should I do when my Mac freezes?

If a single app is frozen, use Apple menu, Force Quit and pick the app, accepting that unsaved changes may be lost. If the whole Mac is unresponsive, hold the power button until it shuts down, then restart. If it keeps happening, start in safe mode and check for updates and recently added devices.