A thinly-veiled plug for political ideology, which will never accomplish what religion can.

If you must dual boot, have totally separate hard drives, and the choosing between Linux and Windows should be done in the UEFI boot menu, not GRUB menu. Windows can render Linux unbootable otherwise, requiring a rather complicated rescue. Windows would ideally not have any chance to see the Linux hard drive while booted.
An external SATA SSD in a USB enclosure is cheap these days.