Format or delete C drive with using Command Prompt (CMD). This allows you to remove all data and reinstall Windows 11/10.

Learn how to format (NTFS or FAT32) a USB Pen Drive using CMD in Windows 11/10. You can use a simple Format command or Diskpart tool.

To format a hard drive before you start using it in Windows, use the Disk Management utility; on a Mac, use Disk Utility.

This article will walk you through how to format your USB key on a Mac, Windows, or Linux PC.