

If you receive any of these errors, you need to fix MBR in Windows 11/10/8/7 to get rid of the boot issues. Once the MBR file is damaged or inaccessible, you may not be able to boot your system at all, and error information as " Operating System not found", "Error loading operating system", "Missing operating system" or "Invalid partition table" will show up. MBR will be created when the first partition on the hard drive is created and it is a very important data structure on the first sector of disk, which contains the partition table for the drive as well as a small amount of executable code for the boot start. Master Boot Record (MBR) belongs to boot record, along with Boot Configuration Data (BCD).
