How to free up space in c drive in windows 10 or windows 11?

To free up space in c drive from windows 10 or windows 11, please try to reduce system restore space.

System Restore is a useful Windows feature that allows you to roll back your system to a previous state if something goes wrong. However, the restore points can take up significant space on your C: drive. Here's how to manage and reduce their disk usage.

How Much Space Does System Restore Use? 

By default, Windows allocates 3–10% of your C: drive for restore points. On a 500GB drive, this could mean 15–50GB reserved for restore points. Older restore points are deleted automatically when space runs out.

How to Free up Space in Drive for Windows 10/11

1. Press Win + S, type "Create a restore point", and open it.

2. Under the "System Protection" tab, select your C: drive and click Configure.

3. Move the slider to set a lower max usage (e.g., 3–5% instead of 10%).

4. Click Apply → OK.

5. Click Delete to remove all existing restore points (only do this if you don’t need them).

Best Practices for System Restore
✔ Keep at least 3–5% allocated (enough for recent restore points).
✔ Manually create a restore point before major changes (Windows updates, driver installs).
✔ Use Disk Cleanup regularly to remove old restore points.
❌ Don’t disable System Restore completely (it’s a lifesaver for system crashes).