problems dual booting Ubuntu 16.04 and Windows 10

[David Collier]

Hello,

I am having problems trying to make grub boot Windows 10. (I tried both
version which came with 16.04 and the latest and greatest), what happens,
it does not recognize any partitions of the hard drive where Windows 10 is
installed.

I can boot Windows by changing the BIOS default boot flow, the UEFI BIOS is
able to do it just fine, but grub just does not refuse to detect Windows
boot partition, or any partition on that drive to that matter. I used the
'disks' utility to change format of the Windows boot partition from FAT to
NTFS, converting it to NTFS makes the BIOS stop recognizing it, but still
does not help grub to recognize it.

Admittedly I don't quite understand how this works, and am puzzled why grub
does not see any other than Linux boot partitions, any help would be highly
appreciated!

thank you,
-dc