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fix(windows/build): launch legacy Setup with explicit /unattend
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Legacy Setup (forced via boot.wim CmdLine) still showed the language page because
implicit answer-file search is unreliable when setup is launched via CmdLine. Inject
autounattend.xml into boot.wim (X:\autounattend.xml) and set CmdLine to
"X:\sources\setup.exe /unattend:X:\autounattend.xml" so all passes are consumed.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
sysadmin
2026-06-08 23:31:37 +01:00
parent 5e6303d48e
commit 17b2ec2be7
1 changed files with 8 additions and 4 deletions
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12
windows/installer/build.ps1
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@@ -96,14 +96,18 @@ function Invoke-ForceLegacySetup {
if (-not (Test-Path $bootwim)) { throw "boot.wim not found: $bootwim" }
Mount-WindowsImage -ImagePath $bootwim -Index 2 -Path $bootmnt | Out-Null
try {
$cmdline = 'X:\sources\setup.exe'
if (-not (Test-Path (Join-Path $bootmnt 'sources\setup.exe')) -and
(Test-Path (Join-Path $bootmnt 'setup.exe'))) { $cmdline = 'X:\setup.exe' }
# Inject the answer file into the WinPE image at a fixed X: path, and launch
# legacy setup with an EXPLICIT /unattend -- the implicit media search is
# unreliable when setup is launched via the CmdLine override (legacy Setup
# otherwise still shows the language page).
Copy-Item (Join-Path $PSScriptRoot 'autounattend\autounattend.xml') (Join-Path $bootmnt 'autounattend.xml') -Force
$setup = if (Test-Path (Join-Path $bootmnt 'sources\setup.exe')) { 'X:\sources\setup.exe' } else { 'X:\setup.exe' }
$cmdline = "$setup /unattend:X:\autounattend.xml"
$hive = Join-Path $bootmnt 'Windows\System32\config\SYSTEM'
& reg load 'HKLM\SM_BOOT' $hive | Out-Null
try {
& reg add 'HKLM\SM_BOOT\Setup' /v CmdLine /t REG_SZ /d $cmdline /f | Out-Null
Write-Host " WinPE Setup\CmdLine = $cmdline (legacy Setup forced)"
Write-Host " WinPE Setup\CmdLine = $cmdline (legacy Setup + explicit unattend)"
} finally {
[gc]::Collect(); Start-Sleep -Seconds 2
& reg unload 'HKLM\SM_BOOT' | Out-Null