Mac

Mac won't boot or is stuck in a boot loop

What to do when an Apple Silicon Mac won't start, restarts in a loop, or hangs on the Apple logo — enter Recovery by holding the power button, use Safe Mode, and reinstall without erasing (the mistake that wipes your data).

The Apple Silicon recovery path (and the wipe to avoid)

Reference images and diagrams. Click any image to view full resolution.

Original concept diagram (not vendor copyright). On Apple Silicon: hold power → Options → Recovery, then First Aid and Safe Mode. Reinstall macOS keeps your data; Erase-then-reinstall wipes it (the irreversible mistake). With Configurator, Revive keeps data and Restore erases — always try the data-preserving path first.

Problem summary

I'm here because my Mac won't start properly — it's stuck on the Apple logo, restarts over and over, shows a question-mark folder, or hangs after a macOS update. On Apple Silicon the recovery tools are different from older Macs (you hold the power button, not key combos), and there's one mistake that turns a recoverable problem into data loss: erasing the disk when you only needed to reinstall. This page walks the safe order — Recovery, Safe Mode, reinstall-without-erase — and the last-resort revive that keeps your data.

Operator snapshotEvidence first

First proof

Force restart (hold power ~10s) and confirm it's powered, not just dark.

Screen to open

Shut down, then press and hold the power button until 'Loading startup options'

Expected signal

A hung boot sometimes clears; you rule out power/display.

Stop boundary

Erasing here is permanent data loss — reinstall first.

Layer path

1A Mac that won't boot fails at one of a few layers: power/display (it's actually on but dark), the system volume (filesystem corruption or a bad system install), software loaded at boot (login items, kexts), credentials (a FileVault unlock loop), or firmware/recoveryOS. The recovery tools map to those layers, and the goal is to fix the lowest-impact one that explains the symptom.

2On Apple Silicon the entry point changed: you press and hold the power button for startup options, not the Intel key combos. From there Recovery offers First Aid, Safe Mode (via the disk + Shift), non-destructive Reinstall, and restore — a graded toolkit from least to most invasive.

3The one irreversible move is erasing the disk. Reinstall macOS is non-destructive; erasing wipes everything. The entire safe sequence is built to fix boot without ever erasing, reserving erase + restore-from-backup for the case where reinstall and a firmware Revive have both genuinely failed — which is why a verified backup must exist first.

Runbook

Step-by-step runbook

Start here. Do each check in order, compare it to the expected result, and stop when the evidence explains the failure or the safe stop point applies.

Force restart

Check: Hold power ~10s, confirm power/display.

Expected result: Clears some hangs; rules out a dark screen.

If not: If still stuck, enter startup options.

Enter Recovery

Check: Hold the power button for startup options → Options → Continue.

Expected result: You have the full Recovery toolkit.

If not: No options at all → firmware/hardware (Revive).

Isolate with Safe Mode + First Aid

Check: Try Safe Mode; run Disk Utility First Aid.

Expected result: Software or filesystem causes are found and fixed.

If not: If neither helps, reinstall (don't erase).

Reinstall non-destructively

Check: Recovery → Reinstall macOS over existing data.

Expected result: The system is repaired with data intact.

If not: Never erase to 'fix' boot; erase is permanent loss.

Credentials or revive

Check: Resolve a FileVault unlock loop, or Revive via Apple Configurator.

Expected result: The Mac boots, or firmware is repaired without data loss.

If not: Restore (erases) only as a last resort with a backup.

Decision tree

If: Boots in Safe Mode but not normally.

Then: A login item, kext, or cache loaded at normal boot.

Action: Remove recent additions / clear caches, then boot normally.

If: First Aid finds and repairs volume errors.

Then: Filesystem corruption was blocking boot.

Action: Reboot normally after the repair.

If: Won't boot; First Aid can't fully repair.

Then: Corrupt system install (data likely intact).

Action: Reinstall macOS (non-destructive); do NOT erase.

Safe stop: Erasing here is permanent data loss — reinstall first.

If: Loops at the FileVault/login unlock after an update.

Then: Credential/unlock issue, not a disk failure.

Action: Enter password/recovery key; reset via Apple Account in Recovery if needed.

If: No signs of life or a firmware error.

Then: Firmware/recoveryOS damage.

Action: Revive via Apple Configurator from a second Mac (keeps data); Restore only as last resort (erases).

Evidence

Evidence table

Symptom	Evidence to collect	Likely layer	Next action
Stuck on Apple logo after an update.	Safe Mode boots; normal boot hangs.	Software loaded at boot.	Remove recent login items/kexts; clear caches.
Boot hangs; First Aid reports errors.	Disk Utility finds volume corruption.	Filesystem corruption.	Run First Aid; reboot.
Question-mark folder / no startup disk.	System volume damaged or unselected.	Corrupt/missing system install.	Reinstall macOS (non-destructive); never erase first.
Loops at unlock after update.	FileVault won't accept/reach credentials.	FileVault unlock loop.	Use password/recovery key; reset via Apple Account.
No logo, no startup options, possible firmware error.	Power button shows nothing.	Firmware/recoveryOS damage.	Revive with Apple Configurator (keeps data).

Reference

Commands and settings paths

Enter Recovery / startup options (Apple Silicon)

Shut down, then press and hold the power button until 'Loading startup options'

Where: On the Mac (hardware step).

Expected: Reaches Options → Continue → Recovery with First Aid, reinstall, restore.

Failure means: If nothing appears, it's a firmware/hardware issue.

Safe next step: Use Revive via a second Mac if startup options never load.

Boot into Safe Mode

From startup options: select the disk, hold Shift, click Continue in Safe Mode

Where: On the Mac, from the startup-options screen.

Expected: Loads a minimal system and clears some caches.

Failure means: Boots in Safe Mode but not normally = software at fault.

Safe next step: Remove recent login items/kexts and reboot normally.

Repair the disk from Recovery

Recovery → Disk Utility → First Aid (show all devices)

Where: In Recovery on the Mac.

Expected: Repairs filesystem errors on the container and volumes.

Failure means: If it can't repair, reinstall (don't erase).

Safe next step: Reinstall macOS non-destructively next.

Reinstall macOS without erasing

Recovery → Reinstall macOS (do NOT use Disk Utility → Erase)

Where: In Recovery on the Mac.

Expected: Reinstalls the system over existing data — non-destructive.

Failure means: Choosing Erase wipes all your files.

Safe next step: Only erase + restore from backup if reinstall genuinely fails.

Hardware boundary

Hardware and platform boundary

Change only when

Keep a current, verified backup at all times — it's what makes the worst case (erase + restore) survivable; see the 3-2-1 plan.
Keep a second Mac and a known-good cable available (or access to one) for Apple Configurator Revive on a firmware-bricked Mac.

Evidence that matters

A verified backup so a destructive recovery is never catastrophic.
Your FileVault password/recovery key stored off the Mac.
Knowing the Apple Silicon entry (hold power), not Intel key combos.

Evidence that does not matter

Third-party 'boot repair' utilities — Recovery's built-in tools are the supported path.
Old Intel key combinations — they don't apply to Apple Silicon.
Erasing as a first move — it's last-resort, not a fix.

Avoid

Erasing the disk to 'fix' boot without a verified backup.
Choosing Restore over Revive in Apple Configurator (Restore erases).
Using Intel-era recovery key combos on Apple Silicon.

Related tool/checklist

Use the linked tool when you need a guided plan from your exact symptoms instead of a static checklist.

Backup plan builder

Last reviewed

2026-06-02 · Reviewed by HomeTechOps. Reviewed against Apple's Apple-Silicon Recovery and reinstall documentation; gives the graded safe sequence (force restart → hold-power Recovery → Safe Mode → First Aid → non-destructive reinstall → FileVault unlock / Configurator Revive) and is emphatic that reinstall keeps data while erasing wipes it, reserving erase for a last resort behind a verified backup.

Sources/assumptions

Assumes an Apple Silicon Mac (including macOS Tahoe / macOS 26); Intel-Mac recovery uses different key combinations.
Recovery, reinstall, and erase behaviour follow Apple's documentation — reinstall is non-destructive, erasing wipes data.
Apple Configurator Revive/Restore requires a second Mac and a supported cable; Revive preserves data, Restore erases.

Source-backed checks

HomeTechOps turns official docs and conservative safety rules into a shorter runbook. These links are the source trail for the page direction.

Apple Support: Use macOS Recovery on a Mac with Apple siliconUsed for entering Recovery on Apple Silicon by pressing and holding the power button (not the old key combos), and the Recovery options including Reinstall macOS and Disk Utility.Apple Support: How to reinstall macOSUsed for the rule that Reinstall macOS from Recovery keeps your data, whereas erasing via Disk Utility wipes it — the critical distinction during a boot-failure recovery.Apple Support: Set a FileVault recovery key on MacUsed for the rule that the FileVault recovery key must be kept somewhere other than the encrypted startup disk, and that a Time Machine backup encrypted with a lost key is unrecoverable.

Diagnostic rule

1. Check the simplest signal first.
2. Change one thing at a time.
3. Avoid unsafe electrical or data-loss steps.
4. Stop when the evidence says the risk moved.

FAQ

How do I get into Recovery on an Apple Silicon Mac?

Shut the Mac down, then press and HOLD the power button until you see 'Loading startup options'. Click Options → Continue. The old Intel key combinations (Command-R and friends) don't work on Apple Silicon — it's the power button now. From Recovery you can run Disk Utility First Aid, reinstall macOS, or restore from a backup.

Will reinstalling macOS erase my files?

No. 'Reinstall macOS' from Recovery reinstalls the system over your existing data and is non-destructive. Erasing the disk (Disk Utility → Erase) is what wipes your files — and it's the mistake to avoid. Try reinstall first; only erase if reinstall has genuinely failed and you have a verified backup to restore from.

My Mac is stuck on the Apple logo after an update — what do I do?

Force restart (hold power ~10s), and if it still hangs, hold the power button to reach Recovery. Try Safe Mode (select your disk, hold Shift, 'Continue in Safe Mode') to isolate software, run Disk Utility First Aid, then reinstall macOS without erasing. If it's a firmware issue with no signs of life, Revive it with Apple Configurator from a second Mac — revive keeps your data.

What's the difference between Revive and Restore in Apple Configurator?

Revive reinstalls the firmware and recoveryOS while keeping your data — always try this first for a Mac that won't boot at all. Restore does the same but also erases the entire disk. Use Restore only when Revive has failed and you've accepted (and backed up for) the data loss.