I have issues similar to this case :
I was installing Windows 10 into my laptop using bootcamp and deleted some partitions which I thought it was unnecessary. And now the only option I have is to boot into Windows OS. I followed the method as shown in the link above but apparently my Mac OS is not inside the disk0, I am very sure that I did not delete the Mac OS and I only delete the small partitions. I am currently running Mac OS Sierra. Is it because it is hidden? I have really important unsaved documents inside my operating system and I would be really glad if someone could offer me some help!
Sorry I am a complete beginner and have no idea how to solve this problem.
Here I attach with the screenshot I took: