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What kind of a program is the Windows 8 "Choose an Option" page?

i.e.:

  • Which .exe file (if any) corresponds to this program?
  • Does it run as a user-mode component or a kernel-mode component?
  • Is it a native NT executable, or does it run under the Win32 subsystem?
  • Does it come up before or after turning on paging?

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why would you want to know thin, im just interested.... – Taylor Gibb Mar 23 '12 at 6:13
    
@TaylorGibb: Trying to understand how the boot process works/how it has changed. – Mehrdad Mar 23 '12 at 6:18
up vote 2 down vote accepted

I think I found it... it seems to be bootux.dll.

It's executing in user-mode indeed -- it's written in C++ and it's using DUI70.dll (the internal DirectUI API), along with other Win32 components.

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