I've been trying to dual-boot Windows 10 with Ubuntu and facing a lot of challenges with the fact that Windows 10 automatically boots in UEFI mode, and not wanting to reinstall Windows to support Legacy Boot.
My Ubuntu installation was done in Legacy mode, so I've been following instructions in this link to convert the installation into UEFI mode. So far, I've been running into two problems:
1) When running Boot-Repair in Legacy mode, the GRUB Location menu is available, but unable to apply the fixes without booting in UEFI mode. 2) When running Boot-Repair in UEFI mode, the GRUB Location menu is wholly unavailable. The title "GRUB Location" is grayed out and no information is available inside of the tab.
I generated Boot Info with the Boot-Repair program, located here.