How the primary bootstrapper corruption is repaired

The primary boot zone is located in the 0-track 0-cylinder 1-sector area of the entire hard drive, including the hard drive bootstrapper and partition table. If the primary boot area is corrupted by viruses, misoperation, etc., it may cause hard disk or data to be inaccessible. Use the U disk to start the system at this time, try to access the hard drive. If it can be accessed, the explanation may be that the system is compromised. If inaccessible, it could be a hardware failure, which is not a common software fix.

The main boot program is located in the main boot sector of the hard disk and is used primarily to detect the correctness of the hard disk partition and to determine the active partition, which is responsible for handing the boot over to the DOS or other system of the active partition. This program is corrupted and will not boot from the hard drive, but can read and write to the hard disk after booting from the floppy or optical drive.

The method of fixing this fault is also simple, using a high version of DOS is the most convenient, when with the parameter/mbr run, the hard drive will be replaced directly the main boot program.