Bcdedit.exe

Boot Configuration Data Editor Type: Command-line system utility Platform: Windows Vista, 7, 8, 10, 11 (and corresponding Server editions) Developer: Microsoft

It provides the granular control necessary for complex setups like dual-booting Linux/Windows, debugging kernel drivers, and—most importantly—resurrecting a system that refuses to start. Treat it with respect, back up your store, and it will serve you well when the spinning dots stop spinning. bcdedit.exe