If you are running Microsoft Windows and have a corrupted Master Boot Records or MBR, you can use Windows' utility to fix the problem from the Windows installer disk.
This method is only helpful in a single-boot environment. It does nothing more than clear your Master Boot Records and creates a single entry to boot into your currently running Windows operating system. You'll need to find a dedicated MBR recovery software if you require anything more.
Related: How to restore MBR from backup in Linux
Related: How to recover lost GRUB bootloader in Linux
bootrec /FixMbr
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