Windows 8 build 8422 (fbl_woa)
|Build of Windows 8|
|Timebomb||2013-01-15 (+236 days)|
Windows 8 build 8422 (fbl_woa) is a build of Windows 8, which was uploaded to BetaArchive on 19 February 2019. It is only available under the ARM32 architecture.
Installation[edit | edit source]
QEMU installation guide[edit | edit source]
Installation guide on QEMU:
Prerequisites[edit | edit source]
The following requirements used in order to install this build onto a virtual machine are listed below:
- A copy of QEMU v6.2.0, modified for Windows RT compatibility
- A version of the TianoCore EDK II firmware designed for ARM32 emulation (included above), to be placed in the QEMU installation directory under
- One virtual hard disk image (for storing the operating system)
Precautions[edit | edit source]
- Certain Windows 8 builds (such as 8330 (fbl_woa) or 8422 (fbl_woa)) may fail to properly load certain binaries on most startup attempts due to an emulation bug that causes the boot environment to read files incorrectly (especially the Hardware Abstraction Layer) causing an invalid checksum error, despite the files themselves being unmodified. This can be worked around by attempting to retry the startup attempt multiple times.
- USB emulation is largely unstable and may result in all input devices failing to register any user inputs. To restore input, switch to the QEMU compatibility monitor (Ctrl+Alt+2) and run the following commands:
device_del kbd device_add usb-kbd,id=kbd device_del mice device_add usb-tablet,id=mice
Instructions[edit | edit source]
Create the needed virtual disk image through the
diskpart utility by running the below script; they will be created under a directory in the C: drive named
ARM8. The partitions it will contain will be respectively mounted under drive letters F and P.
create vdisk file="C:\ARM8\HDD.vhd" maximum=65536 type=expandable select vdisk file="C:\ARM8\HDD.vhd" attach vdisk convert gpt create partition efi size=100 format quick fs=fat32 assign letter=F create partition primary format quick fs=ntfs assign letter=P exit
Deploy the image and apply the generic product key from the build's installation media by invoking the following DISM commands, then add the boot files to the EFI partition:
DISM /Apply-Image /ImageFile:"X:\path\to\install.wim" /ApplyDir:P:\ /Index:1 DISM /Image:P:\ /Set-ProductKey:NFV72-RG2HG-7FTTP-8FJTB-FF848 /AcceptEula bcdboot "P:\Windows" /s F: /f UEFI
Eject the currently attached virtual disk from the machine, then paste and run the contents of the below script onto a batch file within the QEMU installation directory, replacing
YYYY-MM-DD with the build's compile date:
set MAIN="C:\ARM8\HDD.vhd" qemu-system-arm ^ -M virt,highmem=false -cpu cortex-a15 -smp cores=4,threads=2 -m 2048 ^ -device usb-kbd,id=kbd -device usb-tablet,id=mice ^ -drive id=SD,if=none,file=%MAIN% -device sd-card,drive=SD ^ -bios fw\QEMU_EFI_1512_driver1998.fd -device VGA ^ -rtc base=YYYY-MM-DD,clock=vm ^ --accel tcg,thread=multi
Continue installing the operating system through normal means.
Installation on Surface RT devices[edit | edit source]
Contrary to popular belief, this build is actually bootable, but it has only been tested on the Surface RT 1st generation. First you'll need to make a Windows RT 8.0 recovery drive, so the proper boot files can be added (mainly, a signed bootarm.efi). Next, you'll need to install the Secure Boot Debug Policy to your device. Enable test signing, mount the WIM, and follow the steps for registry and dll modifications. Commit your changes when done.
Alternatively, you can use the instructions here to integrate all the boot-critical drivers needed (especially the HAL extensions) so that the build actually boots. Use drivers from Windows RT 8.0 without updates for best results.
Without these modifications, the build will fail to boot with a 0x5C error.
After everything is done, make sure your BCD is enabled for test signing, and the build should boot successfully.
Changes[edit | edit source]
- Upon first boot, the "Please Wait" string has been removed.
- This build reverts back to the stacked 8 default background from build 8330.
- Windows Explorer was renamed to File Explorer.
Bugs[edit | edit source]
Setup[edit | edit source]
Setup may appear to freeze at the end. Hard resetting the device will allow the user to complete setup.
Gallery[edit | edit source]
Setup[edit | edit source]
Interface[edit | edit source]
Metro UI[edit | edit source]
About Internet Explorer
About Windows Store
Desktop UI[edit | edit source]
Windows Basic theme