‎Windows 8 Build 8220.0.winmain_win8beta.120127-1925

8220.0.winmain_win8beta.120127-1925
	Windows 8 的版本
操作系统系列	Windows NT 系列
NT 版本	Windows NT 6.2
内部版本号	8220
修订版本号	0
体系结构	x86, x64, ARM32 (ARMv7)
内部版本实验室	winmain_win8beta
编译日期	2012 年 1 月 27 日
有效期
时间炸弹	2013 年 1 月 15 日（+354 天）
已知 SKU 版本
	Consumer Preview (Prerelease); Consumer Preview ARM (PrereleaseARM)
产品密钥
	H9VCT-63NFW-FWHDR-F4J43-972K8; DNJXJ-7XBW8-2378T-X22TX-BKG7J (alt)
关于对话框

首页 > Microsoft Windows 通述 > Windows 客户端 > Windows 8 > ‎Windows 8 Build 8220.0.winmain_win8beta.120127-1925

Windows 8 build 8220 is a Consumer Preview/Beta escrow build of Windows 8, which was distributed to partners enrolled into the Microsoft Technology Adoption Program (TAP) on 2 February 2012, and then later shared online on 6 July 2024. This is one of the last builds to introduced incorporate the older Windows flag logo introduced in 2001 with Windows XP, as the final Consumer Preview build would already include the new 2012 logo design.

The build includes a subset of minor fit-and-finish changes that continue to reflect the intended vision for the Metro design language introduced as part of the operating system. Alongside builds 8195 and 8277, it is notably one of the last few builds to incorporate the older Windows flag logo introduced in 2001 with Windows XP, as the final Consumer Preview build would already include the new 2012 logo design.

As the build comes from a public release branch intended for the official Consumer Preview/Beta release (win8beta), several anti-leak mechanisms have been relaxed.

A set of screenshots showing off the English (United States) and Simplified Chinese localizations were first posted by members of Chinese forum PCBeta on 4 February 2012,^[1] followed by another set of images uploaded two days later by Canouna, author of Windows beta website Winunleaked.tk.^[2] A video of the ARM compile's boot process was subsequently recorded and uploaded to video sharing site Youku on or around 8 February 2012.^[3] Additional references to the build's ISO image filenames from an employee of an unspecified company participating in the TAP program were later referenced in a question about distinguishing both the official Consumer Preview and this build on the StackExchange Superuser forums on 5 March 2012.^[4]

New features and changes

User interface

Metro shell

The PC settings pinned application tile has been removed from the Start screen and the apps list; the only way to access the application at the time of compilation is through the Settings charm.

Boot Graphics Library (BGFX)

The Boot Graphics Library has been updated to accommodate for legacy BIOS machines utilizing a widescreen monitor configuration; the boot screen, system crash screen and the second stage of setup therefore utilize 16:9 aspect ratio variants of the logo bitmap and Segoe Boot font face, with resources designated under the N moniker.

Secure Boot Policy

This build uses a preliminary version of the Secure Boot Policy, although the on-disk structure is identical to later builds:

Signature validation is different: the policy must have a hash in or be signed by a certificate in the UEFI Key Exchange Key signature database.
The CanUpdate element is used here; the code using it was removed later but the element remained in the file format. A path to an updated policy can either be set in a UEFI variable; alternatively, for BitLocker where the VMK is sealed by the TPM, an updated policy is read from osdevice:\LatestPolicy.p7b. This policy must have a valid signature.
- The updated policy must have a PolicyPublisher equal to one of the CanUpdate GUIDs in the loaded policy; also, the policy version must be greater than the loaded policy's version. If all conditions pass, the updated policy is installed to UEFI non-volatile storage and used as the active policy.
BCD rules are identical to later builds; that is, BCD elements can be overridden by the policy to either be forcibly ignored, or for deletion to be disallowed from the running OS, or for the element value to be locked to a value or one of several values listed in the policy.
Registry rules are not used for low-level cryptographic settings as in later builds but instead are used to override registry values anywhere in HKLM\SYSTEM. The operating system loader winload.e* and NT kernel both have code implementing this functionality; the former uses the policy to override the registry values it reads from that hive.
Option flag bits are completely different from later builds; only 3 bits are used, all by the operating system loader; bit 0 disables the Edit Options menu, bit 1 disables the Advanced Options menu, bit 2 is unknown but related to the Advanced Options menu.

Miscellaneous

The shutdown sound no longer plays when the operating system is being shutdown by the user.

Bugs and quirks

As this build was compiled relatively late into preparations for the upcoming Consumer Preview release, some stability, performance and usability issues are also present in this build.

Filesystem mounting support

The shell may attempt to invoke a Windows Explorer window that navigates to an unoccupied drive letter before an ISO image is able to finish mounting, in turn displaying an invalid path error. The ISO image will still have mounted normally, and can be accessed through ordinary means. Virtual hard disk (VHD) images are confirmed to not be impacted by this bug.

Desktop Window Manager

Attempting to use the Magnifier accessibility tool will create graphical artifacts across windows composited by the Desktop Window Manager.

Recovery

The System Reset tool does not function as the respective modal prompt for removing user data does not display properly.

User interface

Internet Explorer

Elements of the new Internet Explorer user interface may fail to adequately respond to user inputs, appearing to "hang" at times.

Control Panel

Adding a new language (such as Japanese) will cause the Control Panel to hang. The only way to fix this is by restarting the Windows Explorer shell.
Devices are not correctly detected in the PC settings application - as a result, its respective tab will constantly redraw itself when populating devices. Attempting to manually add a device through the Devices tab will consequentially crash the application.

Compatibility

To install or run this build in VMware Workstation, the hardware compatibility must be set to version 9.x or 8.x; otherwise, a bugcheck will occur.

Aero Lite transparency effects

When using the Windows Basic (Aero Lite) visual style, transparency effects can be enabled through the use of a bug in the Personalization Control Panel. To do so:

Right click and click Personalize, then select "Window Color". Keep the Window Color and Appearance Window open.
Open another separate personalization window and select Windows Basic there.
Switch to the other personalize window that was opened before, untick and check the "Enable transparency" option and then click "Save changes". This will cause the transparency effects to take effect.

Gallery

Boot Screen (Legacy BIOS)
Boot Screen (UEFI)

English version

Windows Setup

Autorun
Modernized Setup UI

Modernized Setup UI
Ditto, Upgrade Setup Confirmation

Ditto, Upgrade Setup Confirmation
Ditto, Image Deployment

Ditto, Image Deployment

Interface

Lock Screen
Login Screen
Start Screen
Ditto, Minimized View
Ditto, Applications List
Windows Explorer
PC Settings
Application Snapping

Application Snapping
Ditto.

Ditto.
Start Button Hot Corner
Charms Bar
Windows Basic (Aero Lite) visual style with transparency effects

Windows Basic (Aero Lite) visual style with transparency effects