diff --git a/scripts/Windows/OS/Setup.ps1 b/scripts/Windows/OS/Setup.ps1
index 1f584671..28578a26 100644
--- a/scripts/Windows/OS/Setup.ps1
+++ b/scripts/Windows/OS/Setup.ps1
@@ -4,9 +4,6 @@ $Global:ErrorActionPreference = "Inquire";
 $null = $env:WIN_COMPUTER_NAME;
 $null = $env:SETUP_SCRIPT_NAME;
 
-# Find `winiso` installation medium
-$drives = & wmic volume get "DriveLetter,Label";
-$drive = $($($drives | Select-String -Pattern "winiso") -split "\s+")[0];
 [xml]$unattendedConfig = [xml]::new();
 $unattendedConfig.PreserveWhitespace = $true;
 
@@ -36,10 +33,25 @@ $oobeSystemSettings = Get-PassSettings "oobeSystem";
 $installationCommand = $oobeSystemSettings.SelectSingleNode("./ua:component/ua:FirstLogonCommands/ua:SynchronousCommand[last()]", $namespace);
 $newCommand = $installationCommand.ParentNode.AppendChild($installationCommand.CloneNode($true));
 
+function Get-RemoteScriptPath($path) {
+    $relativePath = [System.IO.Path]::GetRelativePath("$PSScriptRoot/../../..", $path);
+    Join-Path $env:REMOTE_PROJECT_PATH $relativePath;
+}
+
+function Get-Injection($value) {
+    "([System.Text.Encoding]::Default.GetString([System.Convert]::FromBase64String('$(
+        [System.Convert]::ToBase64String([System.Text.Encoding]::Default.GetBytes($value))
+    )')))"
+}
+
+function Get-ScriptPathInjection($path) {
+    "(Join-Path `$env:SystemDrive $(Get-Injection (Get-RemoteScriptPath $path)))"
+}
+
 $newCommand.SelectSingleNode("./ua:CommandLine", $namespace).InnerText = `
     "powershell -Command " + `
-    $(Get-Content "$PSScriptRoot/InitialBoot.ps1") + `
-    "; pwsh '$([System.IO.Path]::GetRelativePath("$PSScriptRoot/../../..", $env:SETUP_SCRIPT_NAME))';";
+    "`$env:INSTALLER_SCRIPT = $(Get-ScriptPathInjection $env:SETUP_SCRIPT_NAME);" + `
+    "Invoke-Expression $(Get-ScriptPathInjection "$PSScriptRoot/InitialBoot.ps1");";
 
 $orderElement = $newCommand.SelectSingleNode("./ua:Order", $namespace);
 $orderElement.InnerText = ([int]($orderElement.InnerText) + 1);
@@ -49,9 +61,10 @@ if (Get-Command Initialize-SetupConfig -ErrorAction SilentlyContinue) {
     Initialize-SetupConfig $unattendedConfig $namespace;
 }
 
+$unattendedConfigFile = "X:\unattend.xml";
 $unattendedConfig.PreserveWhitespace = $true;
-$unattendedConfig.Save("$drive/Autounattend.xml");
+$unattendedConfig.Save($unattendedConfigFile);
 
 Write-Warning "Attention: This program will completely wipe your current disk #1 and install Windows on it. Are you sure you want to do this?"
 Read-Host -Prompt "Hit enter to continue or CTRL+C to abort"
-& "$drive\setup.exe";
+& "$SETUP_DRIVE\setup.exe" /Unattend:$unattendedConfigFile;