bcdedit is a command-line tool in Windows that allows users to manage the Boot Configuration Data (BCD). The BCD contains information about the operating system and boot settings, which are essential for starting Windows. With bcdedit, users can view, modify, or delete boot entries, making it useful for troubleshooting boot issues or configuring dual-boot systems. Using bcdedit requires administrative privileges, and it can be run from the Command Prompt. Common tasks include changing the default operating system, setting boot options, and enabling or disabling features like Safe Mode. Proper use of this tool can help ensure a smooth boot process for Windows.