I just installed (actually I did so three times today) debian on a separate partition in my Win10 laptop (Asus K46CB), but though the installation went smoothly, no OS selection menu comes up upon boot, and Windows loads itself as it always has - i.e. I can't boot to debian at all over this lack of grub menu.
I attempted to run Ubuntu live CD's boot repair utility, but it spit out
grub-efi purge cancelled.
I also tried using EasyBCD on Windows to see if I could add debian as an option in the Windows boot menu, but EasyBCD refuses to work because it's a UEFI system. Though EasyBCD should work with UEFI with a few changes, there are no options in my bios/uefi utility to change anything to "legacy mode", let alone disable "secure boot".
I'm at a loss as to what else to try: I just wanted to have dual-boot work as it does in my ubuntu/win10 desktop.