The image on wds windows 2008 began to slowly deploy. Why is this and what should I do?

Question

linux

In general, I decided to drive a Linux image on wds.
I did it according to this instruction geektimes.ru/post/171329/
Well, I do it, then I had to install the iis server.
In general, I raised iis but did not understand how to manage it.
Well, in general, I deleted the iis role, and two days later I found out that images from wds are loaded for an extremely long time.
In general from what at me such trouble could happen?
And what is the name of the standard Windows bootloader file (well, right now I have pxelinux.com should be returned back)?
Help a noob please.