BenchReady
Find a task / MacBook Air M1

Safe mode comparison

Check whether a repeatable startup symptom changes in Apple silicon safe mode.

MacBook Air M1 · Version 1.0.0 · Planning estimate: 15 minutes

Planning estimate; excludes charging, cooling, backups and service. Not a measured repair time.

Confirm the exact model

Select a model confirmation to begin the checks. The full preparation guide is below.

Preparation guide

  1. Save work and shut down completely. Wait until the screen is black and the Mac is off.

    Source: Start Mac in safe mode · Apple silicon safe mode steps

  2. Hold the power button until startup options appear. Select the startup volume.

    Source: Start Mac in safe mode · Apple silicon safe mode steps

  3. Hold Shift, then click Continue in Safe Mode. Log in with your own credential when asked; keep it private.

    Source: Start Mac in safe mode · Apple silicon safe mode steps

  4. Compare the same symptom, then restart normally to leave safe mode. Differences are a software-loading clue, not a diagnosis of a particular app.

    Source: Start Mac in safe mode · Apple silicon safe mode steps

Check the result

  • Save the safe/normal comparison and review startup software with Apple guidance. Safe mode is a diagnostic comparison, not a repair.
  • A symptom that persists in safe mode needs further support. Preserve the observation rather than erasing or reinstalling macOS.

Stop conditions

  • Stop using and charging a swollen or damaged battery. Do not open, compress, puncture, or attempt battery removal. Contact the manufacturer or a qualified service provider.
  • Disconnect a damaged accessory if it is safe to do so. Do not open a mains power adapter.
  • Save accessible data before restarting. Do not reset, erase, flash firmware, bypass a lock, or open the enclosure in this task.
Model match, danger check, observation, then preparation or service
Decision flow schematic. This is not a component diagram.

Sources and model fit

  1. Start Mac in safe mode

    Start Apple silicon in safe mode · Checked 2026-10-04
    Startup options, Shift and safe mode
    Reference only. Original paraphrase; no copied images or manual pages.

  2. Identify MacBook Air model

    Find model / MacBook Air M1 2020 · Checked 2026-10-04
    Model and chip confirmation
    Reference only. Original paraphrase; no copied images or manual pages.

  3. MacBook Air M1 2020 specifications

    Charging and Expansion / Display Support · Checked 2026-10-04
    USB-C charging, one native external display
    Reference only. Original paraphrase; no copied images or manual pages.

  4. Use Apple Diagnostics

    Prepare / Apple silicon / Results · Checked 2026-10-04
    Startup options, Command-D and reference codes
    Reference only. Original paraphrase; no copied images or manual pages.

  5. Mac battery will not charge

    Check software / Check hardware · Checked 2026-10-04
    Cable, power, temperature and Apple silicon restart
    Reference only. Original paraphrase; no copied images or manual pages.

Original preparation workflow based on the linked documents. No hands-on device repair testing is claimed.

Related preparation

DeviceTaskAction