If your goal is to wipe the drive and start over without needing external media, Windows has a built-in reset tool.
Insert your Windows installation USB or DVD and restart your computer. how to format your c drive
: Use backup software to create an exact clone of your drive in case you need to revert. If your goal is to wipe the drive
Choose for a thorough wipe that is harder to recover. 3. Using Command Prompt (Recovery Mode) how to format your c drive