Ubuntu and Windows dual boot help

[mmirot]

I have Ubuntu and Window installed. Both OS are installed on my Primary SSD hard drive. 
I am trying to get both OS to load from one BIOS hard drive setting.

Ubuntu boots successfully by selecting Standard Hard Drive 1st in the BIOS  boot order.

If I change the BIOS boot order to to EFI Hard Drive - Windows Boot Manager , windows starts .

I was able to use EasyBCD in Window to create a Ubuntu boot entry in Windows boot Manger.
However, it does not start Ubuntu when selected during Boot (EFI Hard Drive - Windows Boot Manager in BIOS) .

I tried adding the Windows 10 using the GRUB customizer in Ubuntu.
I managed to get a Windows 10 entry appear when Ubuntu boots from the Standard Hard drive but Windows does not load either. 

Suggestion?

Max

Max

[NGC7789]

did you follow instructions as here:

https://help.ubuntu.com/community/WindowsDualBoot

They key is to install Ubuntu after Windows.

[avarakin]

I always dual boot using grub, although I never tried windows 10

Alex

[mmirot]

Found the problem
You have to have both systems installed under EFI or legacy respectively . 
I turned off legacy HD in the BIOS and reinstalled PI under EFI.
Bingo I can boot to both OS without switching the BIOS.