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Fix USB creation when install.wim is read-only (#4910)

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* fix: allow USB WIM splitting

* test: guard USB WIM splitting fix
This commit is contained in:
Omar
2026-08-04 16:01:12 -05:00
committed by GitHub
parent 32cc623959
commit f7c072341d
2 changed files with 13 additions and 0 deletions
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functions/private/Invoke-WinUtilISOUSB.ps1
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@@ -241,6 +241,7 @@ function Invoke-WinUtilISOWriteUSB {
$wimSizeMB = [math]::Round((Get-Item $installWim).Length / 1MB)
if ($wimSizeMB -gt 3800) {
Log "install.wim is $wimSizeMB MB - splitting for FAT32 compatibility... This will take several minutes."
Set-ItemProperty -LiteralPath $installWim -Name IsReadOnly -Value $false
$splitDest = Join-Path $usbDrive "sources\install.swm"
New-Item -ItemType Directory -Path (Split-Path $splitDest) -Force
Split-WindowsImage -ImagePath $installWim -SplitImagePath $splitDest -FileSize 3800 -CheckIntegrity