I've been running Windows 10 and Ubuntu 16.04 next to eachother for quite a while. I could boot into either OS with Grub bootloader. Unfortunatly my Windows 10 install broke and I needed to reinstall it.
After reinstalling Windows 10 I could not boot into it anymore with Grub bootloader. So I ran used my bootable Windows USB to execute the following commands to regain acces to Windows:
bootrec.exe /fixmbr bootrec.exe /fixboot bootrec.exe /rebuildbcd
After that I've used
easyBCD to create a new Bootloader menu for Windows 10 and Ubuntu. This got it kind of working again. What I have to do now is to use Windows 10 boot menu to select either Windows 10 or Ubuntu, if I choose Windows 10 it sends me straight into the OS. If I choose Ubuntu however I get send to Grub bootloader with the broken link(?) to my old(?) Windows 10. And selecting Ubuntu boots me into the Ubuntu OS.
What I would like to achieve is that I have everything under the Grub Bootloader again but I'm very confused to what is happening here, so I was hopefull somone could help me out here.
Edit: It seems like
Grub Customizer is removing
/etc/grub.d/40_custom when I try saving in Grub Customizer. When I add those lines in the original file and save it there, the boot option won't show in Grub Customizer.