Hello. I have a custom windows 7 iso that has some tools alongside the windows setup. I edited it using NTLite to add another language, but now I have trouble recreating an .iso. I cannot make it bootable. There's only a few files that ImgBurn recognized as boot images and none of them work once the .iso is made. I've tried various methods of extracting the boot image and still none of them worked.
The one thing that worked was creating non-bootable .iso with ImgBurn, then using Rufus to create a bootable USB. However, I wanted to add the final .iso into my multiboot drive, but it does not boot that way.
So, could anyone help me find/extract/create a boot image file?
Attaching screenshots of relevant folders and files in the original .iso:
