bootrec bcdboot commands

The bootrec and bcdboot commands are command-line tools used in Windows 10 and Windows 11 to repair boot problems such as restart loops, black screens, or failure to load Windows. These tools are accessed from the Windows Recovery Environment and can rebuild the Boot Configuration Data (BCD) and fix master boot record issues. Common bootrec commands include bootrec /fixmbr, bootrec /fixboot, bootrec /scanos, and bootrec /rebuildbcd. The bcdboot command copies boot files to the system partition and can recreate the BCD store. These utilities are essential for troubleshooting when Windows fails to start normally, and they are often used alongside Startup Repair and Safe Mode for comprehensive boot recovery.