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How to Fix Low Disk Space Warning on Windows C Drive

Issue Description 

The C: drive fills up, triggering warnings and slowing Windows performance. 

Common Causes 

  • Temporary files 
  • Old Windows updates 
  • Large user files 

Step-by-Step Solution 

Step 1: Use Storage Cleanup 

  • Open Settings → System → Storage 
  • Click Temporary files 
  • Remove unnecessary items 

 

Step 2: Clean System Files 

  • Search Disk Cleanup 
  • Click Clean up system files 
  • Remove previous Windows installations 

 

Step 3: Move Personal Files 

  • Move Videos, Downloads to another drive or cloud 

 

Step 4: Uninstall Unused Apps 

  • Open Apps → Installed apps 
  • Remove unused large programs 

Explore Further 

  • Expand system partition 
  • Enable Storage Sense 

Prevention & Best Practices 

Monitor disk usage monthly.