I had an issue with Windows 7 and had to reinstall and it overwrote grub. I used a live disk and boot repair to reinstall grub. However it now shows two 'Windows 7 Loaders':
Generating grub configuration file ... Found linux image: /boot/vmlinuz-4.4.0-53-generic Found initrd image: /boot/initrd.img-4.4.0-53-generic Found linux image: /boot/vmlinuz-4.4.0-51-generic Found initrd image: /boot/initrd.img-4.4.0-51-generic Found Windows 7 (loader) on /dev/sda1 Found Windows 7 (loader) on /dev/sda2
I have not seen this before and wanted to ask for advice such as if this could lead to future problems. I assume the sda1 is the Windows rescue partition but am not sure. I seem to recall that a chainloader is used in grub to boot Windows and so perhaps this is the way it represents it. I do not remember the proper Linux way to interrogate this.