If you’ve tried to format your C: drive from within Windows 10, you’ve probably noticed a grayed-out option or an error message. There’s a good reason for this:
Unlike formatting secondary drives (D, E, etc.), you cannot format the C drive while Windows is running because Windows itself is running from that drive. This guide covers the safety precautions, the correct methods to achieve this, and how to reinstall Windows afterward. format c drive windows 10
Downloaded necessary drivers for your hardware to a USB drive if you plan to reinstall manually. If you’ve tried to format your C: drive
Once you click "Format," there is no undo button. Double-check your backups, then proceed with confidence. the correct methods to achieve this