Most mini-Windows have a /sources/boot,wim file which is loaded into RAM. If you have this then you cannot make changes to it.
You can extract the contents of the ISO directly to your E2B drive and then use a /_ISO/MAINMENU/Mini8.mnu file containing
you can use the MPI toolpack to make a .imgPTN file from the ISO.
However, as explained, I don't think it will remember any changes. For that you need a full Win8 To Go install. http://rmprepusb.blogspot.co.uk/2014/04/add-windows-78-to-go-images-to-your.html
Subject Re: Live USB