文档:安装 Milestone 3 Windows 8 ARMv7 builds 在真实 ARMv7 硬件上：修订间差异

如果需要将Milestone 3阶段的Windows RT安装到 [[wikipedia:Surface_(2012_tablet)|Surface RT]] 或 [[wikipedia:Lenovo IdeaPad Yoga 11|Lenovo IdeaPad Yoga 11]]{{efn|Also known as the NEC LaVie Y in Japan, referred to as the Yoga 11 in this guide.}} 需要进行以下准备:

* 目前由于缺少特定的驱动导致只能启动build 7957的 [[预安装环境|WinPE]]  

* The Surface RT 使用 <code>ACPIPatcherOffset1.efi</code>, while the Lenovo IdeaPad Yoga 11 uses <code>ACPIPatcherOffset0.efi</code>.

* Certain builds may require the <code>setup.exe</code> executable to be ran from the <code>sources</code> directory of the installation media instead of the WinPE's, as Windows will fail to verify the product key when inputting it into the Setup.

* This guide has not been tested on the ASUS VivoTab RT and will not work on [[wikipedia:Qualcomm_Snapdragon|Snapdragon]]-based devices.

=== Instructions ===

After placing the contents of the installation media found in the client directory on the USB drive (and, if missing like in the case of the NVIDIA and Texas Instruments partner drops of [[Windows 8 Build 7969.0.fbl_core1_kernel_npc.110323-1848|build 7969 (fbl_core1_kernel_npc)]], the WinPE <code>boot.wim</code> in the <code>sources</code> directory), navigate to the <code>\EFI</code> folder on the root of the USB drive and create a folder named <code>boot</code>. Open the <code>boot.wim</code> file located in the <code>sources</code> directory with a file extraction app, then navigate to <code>Windows\Boot\EFI</code> and extract the <code>bootmgfw.efi</code> file. Place it in the previously created folder and rename it to <code>bootmgr.efi</code>.

Download the correct <code>ACPIPatcherOffset.efi</code> file for the device, and place it in the same directory, then rename it to <code>bootarm.efi</code>. If booting a build between (and including) the [[Windows 8 Build 7968.0.fbl_multimedia_media_sndproc.110322-1700|7968]] to [[Windows 8 Build 8020.0.winmain.110602-1845|8020]] range, open a Command Prompt window as admin, navigate to <code>\EFI\Microsoft\boot</code> on the root folder of the USB drive, and execute the following command:

Additionally, no matter what build is being used, run the following command to turn debug off:

Certain devices may also require the following:

Boot from the USB drive on the device using either volume down on the Surface RT, or volume up + Windows key (on tablet) on the Yoga 11, and install the operating system as normal. After rebooting, boot back into the USB drive, open a Command Prompt by pressing Shift+F10, and launch <code>diskpart</code>. Then execute the following command, where X is the eMMC disk partition and Y is the 100MB EFI System partition:

Navigate to <code>Z:\EFI</code> in Command Prompt and copy over the <code>bootarm.efi</code> and <code>bootmgr.efi</code> files from the USB drive's <code>EFI\boot</code> directory to the <code>Z:\EFI\boot</code> directory. If running a build between (and including) the 7968 to 8020 range, execute the following command as well:

Optionally, copy over the patched <code>dwm.exe</code> file to the <code>\Windows\System32</code> directory to enable Aero. After doing so, reboot and continue with the operating system installation as normal.