Rebuild MBR

MBR, short for Master Boot Record, is a special sort of boot sector, which is located at the beginning of system partition. The function of MBR is telling the boot process as to what is about to follow. Besides, it usually includes some lines of executable code passing the boot process to operating system. If MBR gets damaged, corrupted, or lost, you can follow steps here to rebuild it.

Step 1. Click Disk menu and choose "Rebuild Master Boot Record", as below.

Step 2. Click Yes from the pop-up message box and DiskGenius commits the task.