How to add an entry with installation files to the Windows bootloader on another partition?

Question

Windows

Guys, tell me, there is a flash drive on which there are 3 local disks:

C- Windows is installed
D - files installing Windows
N - just files
So, I want to make it possible to start the installation of Windows 10 from the bootloader of the installed Windows, the files of which are located on drive D.
As I understand it, you need to set the correct ApplicationPath and SystemRoot parameters.
In ApplicationPath I tried \bootmgr.efi, \bootmgr, \efi\boot\bootx64.efi - it gives a boot error