# First Boot
During First Boot (Specialize Phase), any EXE based DriverPacks in C:\Drivers will be expanded. Once expanded, they will be applied using the following PowerShell commands
```powershell
New-Item -Path "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion\UnattendSettings\PnPUnattend\DriverPaths" -Name 1 -Force
New-ItemProperty -Path "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion\UnattendSettings\PnPUnattend\DriverPaths\1" -Name Path -Value $DestinationPath -Force
pnpunattend.exe AuditSystem /L
Remove-Item -Path "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion\UnattendSettings\PnPUnattend\DriverPaths\1" -Recurse -Force
```
You can identify this phase by the "Getting ready"
## Dell Systems
Dell uses CAB files or EXE files that can be expanded in WinPE, so there is no activity in First Boot other than a long delay. You can review the logs in C:\Windows\debug
```powershell
Start-Process -FilePath $ExpandFile -ArgumentList "/s /e=`"$DestinationPath`"" -Wait
Write-Verbose -Verbose "$((Get-Date).ToString('yyyy-MM-dd-HHmmss')) Applying DriverPack with PNPUNATTEND"
New-Item -Path "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion\UnattendSettings\PnPUnattend\DriverPaths" -Name 1 -Force
New-ItemProperty -Path "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion\UnattendSettings\PnPUnattend\DriverPaths\1" -Name Path -Value $DestinationPath -Force
pnpunattend.exe AuditSystem /L
Remove-Item -Path "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion\UnattendSettings\PnPUnattend\DriverPaths\1" -Recurse -Force
```
## HP Devices
HP DriverPacks are silent, so there is no progress displayed during this phase other than a long delay. You can review the logs in C:\Windows\debug
```powershell
Start-Process -FilePath $ExpandFile -ArgumentList "/s /e /f `"$DestinationPath`"" -Wait
Write-Verbose -Verbose "$((Get-Date).ToString('yyyy-MM-dd-HHmmss')) Applying DriverPack with PNPUNATTEND"
New-Item -Path "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion\UnattendSettings\PnPUnattend\DriverPaths" -Name 1 -Force
New-ItemProperty -Path "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion\UnattendSettings\PnPUnattend\DriverPaths\1" -Name Path -Value $DestinationPath -Force
pnpunattend.exe AuditSystem /L
Remove-Item -Path "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion\UnattendSettings\PnPUnattend\DriverPaths\1" -Recurse -Force
```
## Lenovo Devices
Lenovo devices will display a progress when the DriverPacks is expanded
```powershell
Start-Process -FilePath $ExpandFile -ArgumentList "/SILENT /SUPPRESSMSGBOXES" -Wait
Write-Verbose -Verbose "$((Get-Date).ToString('yyyy-MM-dd-HHmmss')) Applying DriverPack with PNPUNATTEND"
New-Item -Path "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion\UnattendSettings\PnPUnattend\DriverPaths" -Name 1 -Force
New-ItemProperty -Path "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion\UnattendSettings\PnPUnattend\DriverPaths\1" -Name Path -Value $DestinationPath -Force
pnpunattend.exe AuditSystem /L
Remove-Item -Path "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion\UnattendSettings\PnPUnattend\DriverPaths\1" -Recurse -Force
```
## Microsoft Surface Devices
Microsoft uses MSI DriverPacks which expanded silently, so there is no activity in First Boot other than a long delay. You can review the logs in C:\Windows\debug
```powershell
$DateStamp = Get-Date -Format yyyyMMddTHHmmss
$logFile = '{0}-{1}.log' -f $ExpandFile,$DateStamp
$MSIArguments = @(
"/i"
('"{0}"' -f $ExpandFile)
"/qb"
"/norestart"
"/L*v"
$logFile
)
Start-Process "msiexec.exe" -ArgumentList $MSIArguments -Wait -NoNewWindow
```
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