| Method | Scope | Accuracy | Requires Original Hash | OS Support | Ease of Use | |--------|-------|----------|------------------------|-------------|--------------| | SFC | System files | High (for OS) | No | Windows | Very easy | | CHKDSK | File system | Medium | No | Windows | Easy | | Disk Utility | File system | Medium | No | macOS | Easy | | fsck | File system | Medium | No | Linux | Medium | | Hash check | Any file | Perfect | Yes | All | Medium | | Archive test | Archives | High | No | All | Easy | | Media check (FFmpeg) | Media files | High | No | All | Harder |

If your Mac is acting up, verify your disk permissions and structure.

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