C Drive Space Cleanup Report
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About this skill
Problem
Low free space on Windows C: is often caused by system caches, app data, temp files, and user directories. Casual cleanup is risky because shared folders may contain project files, browser settings, downloads, or other personal work.
How It Works
The skill generates a double-clickable HTML report for C-drive capacity review. The main workflow is:
- Read-only scan: prefer scripts/scan.ps1 to produce auditable JSON data; fall back to manual measurement from references/measure.md when scripting is unavailable.
- Classification: mark items as green, yellow, or red for safe deletion, caution, and protection; uncertain items default to yellow.
- Report filling: do not hand-write HTML; only fill structured JSON into assets/report-template.html, while the template calculates layout, percentages, and action hints.
- Pre-delivery checks: validate source numbers, nesting depth, JSON size, and user-facing steps using references/checklist.md.
Boundaries
The skill only measures, classifies, and reports. It does not delete, move, empty the Recycle Bin, or run cleanup tools. Results are machine-specific and must not use example capacities as targets. All actions should be completed through Windows UI, and paths should use placeholders such as %USERPROFILE% to avoid exposing real usernames.
Use Cases
- When a Windows desktop has less than 5 GB free on C:, generate an HTML report that locates large folders and flags safe deletions.
- Before migration or reinstall, read-only scan C-drive caches, app data, and user folders to produce a green/yellow/red classification list.
- Prepare a cleanup report for a non-technical user with Explorer paths, hidden-folder hints, Recycle Bin reminders, and no command-line actions.
- If scan JSON and manual measurements diverge, re-check number sources, nesting depth, JSON size, and checklist status before final delivery.
Best For
- IT support staff maintaining office Windows PCs who need to turn C-drive cleanup advice into a user-actionable report for handoff.
- Office users facing low C-drive space who need to know which folders are safe to delete and which must be kept.
- Ops engineers assessing C-drive usage, app caches, and relocatable user folders before migration or reinstall to prepare a clean baseline image.
- Technical support consultants who need to deliver a Windows disk audit report with clear desktop cleanup steps for customer handoff.
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