Mac Troubleshooting
8 of the most common Mac problems, each written as symptoms → causes → quick fix → full walkthrough → how to prevent it. Where a single command does the job, you get the command — not ten articles to cross-reference.
中文版：Mac 常见问题排查手册 →
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Find the real culprit before deleting anything. The order that works: Storage panel, then large-file scan, then System Data, then app leftovers. Blindly deleting "Other" only makes it messier.
Read the walkthrough →System Data is not one deletable folder. It is a summary of caches, logs, snapshots and local backups. Handle it by category — the biggest offender is almost always Time Machine local snapshots.
Read the walkthrough →Being slow for the first 24 to 48 hours is normal — the system is rebuilding indexes and re-analysing your photo library. Only start troubleshooting if it is still slow after three days.
Read the walkthrough →Overheating is rarely a hardware fault. Usually a process is pegging the CPU, or the machine is doing heavy work somewhere it cannot cool itself. Find the culprit in Activity Monitor first.
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