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#11
I'm pretty sure it doesn't apply. I don't have a dual boot system. However, some weeks ago I created a repair USB that booted into some Linux. I was never able to use this USB, because it referred to syslinux subdir, but that directory was named something else on the USB. After attempting to boot into it I discovered that it actually altered the boot on my system disk! Seemed to have installed GRUB.
I can't tell you all that I went through to get my system back, but I did - my Windows system partition was untouched and I was able to get my UEFI boot back to reality.