Windows 8 Build 7978.0.fbl_grfx_dev1.110406-1700
| Windows 8 的版本 | |
-Desktop.png) | |
| 操作系统系列 | Windows NT 系列 |
|---|---|
| NT 版本 | Windows NT 6.2 |
| 内部版本号 | 7978 |
| 修订版本号 | 0 |
| 体系结构 | x86 |
| 内部版本实验室 | fbl_grfx_dev1 |
| 编译日期 | 2011 年 4 月 6 日 |
| 有效期 | |
| 时间炸弹 | 2011 年 7 月 1 日 （+86 天） |
| 关于对话框 | |
-About.png) | |
Windows 8 build 7978 (fbl_grfx_dev1) is a build of Windows 8, which was shared on 9 May 2021.
SKU 版本和密钥
| Key | 密钥 |
|---|---|
| Starter | 7Q28W-FT9PC-CMMYT-WHMY2-89M6G |
| Home Basic | YGFVB-QTFXQ-3H233-PTWTJ-YRYRV |
| Home Premium | RHPQ2-RMFJH-74XYM-BH4JX-XM76F |
| Professional | HYF8J-CVRMY-CM74G-RPHKF-PW487 |
| Ultimate | D4F6K-QK3RD-TMVMJ-BBMRX-3MBMV |
Redpill
The Redlock tool can be used to unlock all of the Redpill levels on this build, including the Start screen.
The design of the Start screen tile has been changed, and as such no longer features a colored background that is based on the application's icon. A dark aqua background has been introduced in place of the previous functionality.
Bugs and quirks
App tiles
Some app names (such as Control Panel, Chess Titans, Defragment and Optimize Drives, etc) may be truncated by normal sized tiles.
Advanced Vector Extensions CPU bug
This build will not boot on some CPUs with the Advanced Vector Extensions (AVX) instruction set due to a bug where a CPU triple fault occurs immediately after the boot screen is first displayed. A workaround is discussed later in the article.
Aero
Only the top portion of the window frame is blurred when using the Windows Aero theme, leaving the side borders transparent.
Behavior in Starter and Home Basic editions
This build automatically enables Aero Glass transparency after installing the Starter and Home Basic SKUs, despite product policies limiting usage of such effects. Changing the current visual style over to a different one (e.g.: Windows Basic) will disable glass effects.
General
If using VMware Workstation versions 15.x or above changes in build 7878, attempting to restart or shutdown in this build will cause a softlock. To fix this, use the Power menu from the VM section. This bug persists until build 8008.
Miscellaneous
- On some devices, opening either Windows Photo Viewer or Internet Explorer results in a
0x50bugcheck. This can usually be fixed by using the Windows Basic theme, or on some machines, by installing a dedicated graphics driver.
Compiler
This is one of the first builds to be compiled using a new compiler. However, the problems surrounding it at that time resulted in the build becoming unbootable on certain hardware, as the boot loader does not properly function on modern x86 CPUs, namely Intel processors with the AVX instruction set and a select number of AMD CPUs. As a result, a CPU triple fault occurs resulting in either a crash on a hypervisor or a reboot on real hardware.
Patching winload.exe to run on Intel processors with AVX
In order to properly enable SSE instructions for machines using Intel processor with AVX, the 9th bit in Control Register 4 (CR4) must be turned on. The following code is executed and is located in winload.exe at offset A552:
mov eax, cr4 ; 0f20e0
or eax, 20h ; 83c820 -- Turn on 5th bit, PAE (Physical Address Extension)
mov cr4, eax ; 0f22e0 -- Store it in CR4
mov eax, cr0 ; 0f20c0
or eax, 80000000h ; 0d00000080 -- Enable paging
mov cr0, eax ; 0f22c0
By default the following bits are set in CR0: Protected Mode (PE) (0x00000001), Monitor co-processor (MP) (0x00000002) and Extension type (ET) (0x00000010), with no bits in CR4 set initially, so the need to turn on the 9th SSE bit (i.e. OR with 0x600) should be done, but due to limitation in this piece of code, a rewriting needs to be done and the following approach may be used instead:
mov eax,620h ; b820060000
mov cr4,eax ; 0f22e0
mov eax,80000013h ; b813000080
mov cr0,eax ; 0f22c0
nop ; 90
nop ; 90
nop ; 90
nop ; 90
As a disclaimer, patching winload.exe with these changes will invalidate integrity checks and thus requires Test Mode to be enabled (by setting NoIntegrityChecks in the BCD to on) in order to boot with the patched winload.exe, as well as ownership of the file in both %systemroot%\System32 and %systemroot%\System32\Boot need to be altered in case file replacement was not possible.
Compatibility
VMware Workstation
The Intel SSE bug can be worked around by setting the compatibility level to version 7.x or lower and the following block of code must be added to the VMX (virtual machine configuration) file in order to allow this build to boot on modern Intel CPUs:
cpuid.0.ebx = "0110:1000:0111:0100:0111:0101:0100:0001"
cpuid.0.ecx = "0100:0100:0100:1101:0100:0001:0110:0011"
cpuid.0.edx = "0110:1001:0111:0100:0110:1110:0110:0101"
cpuid.1.eax = "0000:0000:0000:0001:0000:0110:0111:0001"
The above configuration is mostly not required if the host machine has an AMD processor, and as such only requires the compatibility version to be changed.
图库
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启动屏幕
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安装程序
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Metro Welcome Screen
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Metro start screen
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Immersive Control Panel
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Charms Bar
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16-bit Emulation
-StartScreen.png)
-ImmersiveControlPanel.png)
-CharmsBar.png)
