Media Kit reports not enough space on device for requested operation error!

Hey,
I managed to install Sierra 10.12.6 on my laptop (Asus 3rd Gen, HD 4000) and the installation went smoothly. While that is great. I have encountered a problem. I installed the OS on a spare 24GB mini SSD that came on my laptop to speed up the boot process. However I upgraded to an SSD later on so this mini SSD was never in use. So I used this as a test drive.
After the installation I thought I can now erase one of the partitions from my windows drive and use that as a mac drive but I was presented with this error in disk utility "Media Kit reports not enough space on device for requested operation error!"

Upon searching I came across the post guide in tonymac by crazyboy24. I tried his method but windows doesn't let me copy the contents of the efi folder even after starting explorer with admin priviledges. I also tried his bcdboot command and that doesn't seem to be working as well, I get ("bcdboot Failure when attempting to copy boot files") error.

Is there anyway I can get the drive to erase, either through terminal or some other way without reinstalling windows?

One weird thing I noticed is that, the installation let me erase my mini ssd without any problem, but now if I try to install mac on my windows drive during the installation it won't be format it there as well. Why did it let me erase the 24gb ssd then?

Also in disk management I see that now my mac installation drive(24gb) has a 200mb efi partition as well along with the 100mb one created by windows(in a separate drive). So why am I even getting this error during the drive erase process?

As a reference, I attached the partition image of my drives so you can see what I meant. Here's the link : https://imgur.com/a/McVgb

Any help would be appreciated.