Installing Windows 10 using Gandalf Windows 10 PE x64
In this video, we install Windows 10, but in an unusual way. We use the Gandalf Windows 10 PE x64, a boot disk usually used for Recovery, whereas we're using it for Deployment.
E: is the drive letter for another ISO made from the install.esd found in a Windows installation ISO in /sources.
I also came across a boot disk Bob.Omb's Modified Win10PE: http://dl.devdrive.org/bob-omb-win10pe-x64.zip