LinuxBSDos.com shows you how to restore the Windows bootloader to MBR after dual-booting with Linux
If you are reading this, you have likely attempted or actually set up a dual-boot system between your favorite Linux distribution and Windows. And if you did that on a computer with a single hard drive, that is, dual-booting Windows and Linux alongside each other, you probably replaced the Windows boot loader with GRUB, the Linux boot loader, in the Master Boot Record (MBR).Restore the Windows bootloader to MBR after dual-booting with Linux
Though that is not what I recommend, many still prefer it that way, even as I have written in many of my dual-boot tutorials that Windows will, during a reinstall, overwrite anything it finds in the MBR, and that some anti-virus programs tend to write small files to the MBR, messing up GRUB.
