This build was originally leaked by WiNBETA, with short filenames and a modified biosinfo.inf (with their name on it) which later got fixed by removing the last 2048 bytes (still not original) and converting all short filenames to long filenames.
This copy of Longhorn build 4015 was made by replacing WiNBETA's biosinfo.inf with the original copy inside install.wim and converting short filenames to long filenames.
Gallery
There are no images in the gallery for this release.