I really need USB Mass Storage, don't judje me.
After getting responses for one of my older post, I decided to write a tutorial that might work today.
Installing Windows NT 6.x from USB is almost as easy as installing from a DVD.
When I first bought my Asus Eee PC 901 it was a headache to install Windows XP on it. But soon I found a way to solve that.
With Microsoft releasing Windows PE to general public, booting from USB has been child's play, and a lot of system rescue tasks has been made easy.
It is not supported!..
I installed both Windows 7 Beta and Windows 7 RC1 with UNetBootin (with a little tweak). I was successful to boot WinPE 2, WinPE 2.1 and WinRE 3 RC1 with UNetBootin. I would guess Windows 7 RTM will have no problem either.