◆Error Codes Wiki

Mac Safe Mode — How to Boot, Troubleshoot, and Exit Safe Mode

Warningboot

Overview

Guide to booting Mac in Safe Mode for troubleshooting, understanding what Safe Mode disables, and resolving issues where Mac is stuck in Safe Mode.

Key Details

  • Safe Mode boots macOS with minimal drivers and disables login items, non-essential system extensions, and fonts
  • On Apple Silicon: shut down, hold power button until 'Loading startup options' appears, select volume, hold Shift, click Continue in Safe Mode
  • On Intel Mac: shut down, turn on, immediately hold Shift until login screen appears
  • Safe Mode also runs a basic file system check and clears certain caches
  • Some features are unavailable in Safe Mode: WiFi may be limited, GPU acceleration is reduced

Common Causes

  • Third-party login items or extensions causing boot failures
  • Corrupted font cache preventing normal boot
  • Malware-installed startup items interfering with normal operation
  • System extension conflict after macOS update
  • Kernel extension incompatibility causing kernel panics during normal boot

Steps

  1. 1Boot into Safe Mode using the method for your Mac type (Apple Silicon or Intel — see details above)
  2. 2If Mac boots in Safe Mode but not normally: the issue is a login item or extension
  3. 3Remove problematic login items: System Settings > General > Login Items > disable all third-party items
  4. 4Uninstall recently added apps or extensions that may cause conflicts
  5. 5Clear caches: restart normally — Safe Mode already cleared font and kernel caches
  6. 6If stuck in Safe Mode: restart normally without holding any keys — Safe Mode does not persist across restarts

Tags

safe-modeboottroubleshootinglogin-itemsdiagnostics

Related Items

mac-apple-logo-stuckmac-kernel-panic

More in Boot

windows-error-0xc0000034Windows Boot Error 0xC0000034 — Missing Boot Configuration Data
Critical
windows-error-0xc00000e9Windows Boot Error 0xC00000E9 — Unexpected I/O Error
Critical
windows-error-0xc0000098Windows Boot Error 0xC0000098 — BCD Missing OS Entry
Critical
windows-error-0xc00000e-boot-configWindows Error 0xc00000e — Boot Configuration Data Missing or Corrupted
Critical
windows-error-startup-repair-loopWindows Startup Repair Loop — Automatic Repair Cannot Fix Your PC
Critical
windows-safe-mode-boot-issuesSafe Mode Boot Issues — Windows Cannot Start in Safe Mode Troubleshooting
Critical

Frequently Asked Questions

Click Apple menu > About This Mac > System Report > Software > Boot Mode should say 'Safe'. The login screen also shows 'Safe Boot' in red text in the menu bar.