Repoint endless OS in windows 10 bcd boot loader

I had to remap Windows 10 Enterprise BCD using bootrec and it’s only found the Windows installation. How can I repoint Windows bootloader program / BCD bootloader to also show endless OS as an installation again so that I have the option to load either one at startup. Tools available on Windows 10 are visual BCD and easy BCD.

You can do it with bcdedit – I made a note of the rough commands in the installer source code. $wszPartitionPath is normally C: and $mbrPathWithoutDrive is \eosldr.mbr. I don’t have Visual BCD or Easy BCD to hand at the moment (or, actually, a BIOS Windows system!) so if you get it working perhaps you could take a screenshot or two?

Many thanks, that worked!