From 64babfe986755c977e3a0706266d6712a4b11632 Mon Sep 17 00:00:00 2001
From: Real-MullaC <callumjanes2007new+github@gmail.com>
Date: Fri, 2 Jan 2026 12:18:19 +0000
Subject: [PATCH] Add Create Bootable USB (#18)

* Add Create Bootable USB

* Apply suggestion from @CodingWonders

---------

Co-authored-by: CodingWonders <101426328+CodingWonders@users.noreply.github.com>
---
 functions/microwin/Invoke-Microwin.ps1      |  7 +++
 functions/microwin/Microwin-BootableUSB.ps1 | 58 +++++++++++++++++++++
 xaml/inputXML.xaml                          |  1 +
 3 files changed, 66 insertions(+)
 create mode 100644 functions/microwin/Microwin-BootableUSB.ps1

diff --git a/functions/microwin/Invoke-Microwin.ps1 b/functions/microwin/Invoke-Microwin.ps1
index a854b939..4b2509dc 100644
--- a/functions/microwin/Invoke-Microwin.ps1
+++ b/functions/microwin/Invoke-Microwin.ps1
@@ -55,6 +55,7 @@ public class PowerManagement {
     Write-Host "Index chosen: '$index' from $($sync.MicrowinWindowsFlavors.SelectedValue)"
 
     $copyToUSB = $sync.WPFMicrowinCopyToUsb.IsChecked
+    $bootable = $sync.WPFMicrowinBootable.IsChecked
     $injectDrivers = $sync.MicrowinInjectDrivers.IsChecked
     $importDrivers = $sync.MicrowinImportDrivers.IsChecked
 
@@ -628,6 +629,12 @@ public class PowerManagement {
             if ($?) { Write-Host "Done Copying target ISO to USB drive!" } else { Write-Host "ISO copy failed." }
         }
 
+        if ($bootable) {
+            Write-Host "Making Bootable USB drive"
+            Microwin-BootableUSB("$($SaveDialog.FileName)")
+            if ($?) { Write-Host "Done making bootable USB drive!" } else { Write-Host "Bootable USB creation failed." }
+        }
+
         Write-Host " _____                       "
         Write-Host "(____ \                      "
         Write-Host " _   \ \ ___  ____   ____    "
diff --git a/functions/microwin/Microwin-BootableUSB.ps1 b/functions/microwin/Microwin-BootableUSB.ps1
new file mode 100644
index 00000000..9d06b15f
--- /dev/null
+++ b/functions/microwin/Microwin-BootableUSB.ps1
@@ -0,0 +1,58 @@
+function MicroWin-BootableUSB {
+    [CmdletBinding()]
+    param (
+        [Parameter(Mandatory=$true)]
+        [string]$IsoPath
+    )
+
+    $TargetDisk = Get-Disk | Where-Object { $_.BusType -eq 'USB' -and $_.OperationalStatus -eq 'Online' } | 
+                    Sort-Object Number |
+                    Out-GridView -Title "MicroWin: Select Target USB Drive" -OutputMode Single
+
+    if (-not $TargetDisk) {
+        Write-Warning "No USB drive selected. Operation cancelled."
+        return
+    }
+
+    $msgTitle = "MicroWin USB Warning"
+    $msgText  = "WARNING: ALL DATA ON DISK $($TargetDisk.Number) WILL BE DELETED!`n`nAre you sure you want to proceed?"
+    $msgIcon  = [System.Windows.MessageBoxImage]::Warning
+    $msgButton = [System.Windows.MessageBoxButton]::YesNo
+
+    $Response = [System.Windows.MessageBox]::Show($msgText, $msgTitle, $msgButton, $msgIcon)
+    if ($Response -ne "Yes") {
+        Write-Warning "Operation cancelled by user."
+        return 
+    }   
+
+    try {
+        Write-Host "Cleaning Disk $($TargetDisk.Number)..." -ForegroundColor Yellow
+        $TargetDisk | Clear-Disk -RemoveData -Confirm:$false
+        $TargetDisk | Initialize-Disk -PartitionStyle GPT -PassThru -ErrorAction SilentlyContinue | Out-Null 
+
+        Write-Host "Creating NTFS Partition..." -ForegroundColor Yellow
+        $Partition = New-Partition -DiskNumber $TargetDisk.Number -UseMaximumSize -AssignDriveLetter
+        $USBLetter = "$($Partition.DriveLetter):"
+
+        Format-Volume -DriveLetter $Partition.DriveLetter -FileSystem NTFS -NewFileSystemLabel "MicroWin" -Confirm:$false
+
+        Write-Host "Mounting ISO: $IsoPath" -ForegroundColor Cyan
+        $Mount = Mount-DiskImage -ImagePath $IsoPath -PassThru
+        $IsoLetter = ($Mount | Get-Volume).DriveLetter + ":"
+
+        Write-Host "Copying files to $USBLetter (this may take a few minutes)..." -ForegroundColor Cyan
+        Copy-Files "$($IsoLetter)" "$($USBLetter)" -Recurse -Force
+
+        if (Test-Path "$IsoLetter\boot\bootsect.exe") {
+            Write-Host "Applying Boot Code..." -ForegroundColor Green
+            Set-Location "$IsoLetter\boot"
+            ./bootsect.exe /nt60 "$USBLetter" /force /mbr
+        }
+
+        Dismount-DiskImage -ImagePath $IsoPath
+        Write-Host "SUCCESS: MicroWin USB created on $USBLetter" -ForegroundColor Green
+    }
+    catch {
+        Write-Error "Failed to create USB: $($_.Exception.Message)"
+    }
+}
\ No newline at end of file
diff --git a/xaml/inputXML.xaml b/xaml/inputXML.xaml
index 295df951..a5266bcf 100644
--- a/xaml/inputXML.xaml
+++ b/xaml/inputXML.xaml
@@ -1459,6 +1459,7 @@
                             <CheckBox Name="MicrowinCopyVirtIO" Content="Include VirtIO drivers" Margin="{DynamicResource MicrowinCheckBoxMargin}" IsChecked="False" ToolTip="Copy VirtIO Guest Tools drivers to your ISO file. Check this only if you want to use it on QEMU/Proxmox VE"/>
                             <Rectangle Fill="{DynamicResource MainForegroundColor}" Height="2" HorizontalAlignment="Stretch" Margin="0,10,0,10"/>
                             <CheckBox Name="WPFMicrowinCopyToUsb" Content="Copy to Ventoy" Margin="{DynamicResource MicrowinCheckBoxMargin}" IsChecked="False" ToolTip="Copy to USB disk with a label Ventoy"/>
+                            <CheckBox Name="WPFMicrowinBootable" Content="Make Bootable USB" Margin="{DynamicResource MicrowinCheckBoxMargin}" IsChecked="False" ToolTip="Make the USB drive bootable"/>
                             <Rectangle Fill="{DynamicResource MainForegroundColor}" Height="2" HorizontalAlignment="Stretch" Margin="0,10,0,10"/>
                             <TextBlock Margin="6" Padding="1" TextWrapping="Wrap"><Bold>Custom user settings (leave empty for default user)</Bold></TextBlock>
                             <TextBlock Margin="6" Padding="1" TextWrapping="Wrap">User name (20 characters max.):</TextBlock>