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Fix your Mac

Plain answers to everyday Mac problems, tested on a real Mac and dated. Built-in fixes first. We only mention an app when it actually solves the problem.

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Storage fullSystem Data, Downloads, caches, duplicates, iCloud5 guidesSlow MacBeachball, high CPU, kernel_task, WindowServer2 guidesFiles & FinderCannot delete, cannot copy, Trash, error codes2 guides

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  1. Mac storage full? 7 fixes, from free to one clickStorage full
  2. kernel_task using high CPU on Mac: what it means and what to doSlow Mac

Recently verified

  1. Can't empty Trash on Mac because a file is in use? How to fix itOct 12 · macOS 26.3
  2. How to delete Time Machine local snapshots on a MacOct 12 · macOS 26.3
  3. Is it safe to delete Library Caches on a Mac?Oct 12 · macOS 26.3
  4. kernel_task using high CPU on Mac: what it means and what to doOct 12 · macOS 26.3
  5. Mac error code 36 when copying or deleting files: how to fix itOct 12 · macOS 26.3
  6. Mac storage full? 7 fixes, from free to one clickOct 12 · macOS 26.3
  7. Mac System Data too large? What it is and how to shrink it safelyOct 12 · macOS 26.3
  8. Why Xcode takes so much space, and what you can deleteOct 12 · macOS 26.3