Comment by toast0

Yes, it's annoying, but it's not app compat. And dual-boot is pretty far outside the mainstream, I don't blame them for not building out other boot loader detection and integration. Other bootloaders change frequently, and windows install discs come out maybe every two years. It's better to have consistent behavior (windows install WILL wipe your MBR) than sometimes it works and sometimes it doesn't, and when it doesn't work everyone says it worked for me, etc.