If your Mac starts up to a question mark — by Apple Support
intermediatepageLink only (©)
Explains that a flashing question mark means the Mac cannot find a working startup disk. Walks through repairing the disk in Recovery, reinstalling macOS and checking Startup Disk settings and NVRAM.
Quick steps
- Enter macOS Recovery
- Run a Disk Utility repair
- Erase and reinstall if repair fails
- Verify startup disk and NVRAM
Paraphrased from the source. Menus can differ by version, so check the original for full details.
Source: If your Mac starts up to a question mark by Apple Support. Licence: Link only (©).
- Source reviewed
- 2026-11-02
- Link checked
- 2026-11-02
- Tested hands-on
- Not by Oddbyte.Me