diff --git a/Robocopy镜像文件小程序/MirrorFiles.ps1 b/Robocopy镜像文件小程序/MirrorFiles v0.1.ps1
similarity index 97%
rename from Robocopy镜像文件小程序/MirrorFiles.ps1
rename to Robocopy镜像文件小程序/MirrorFiles v0.1.ps1
index 8b0309f..5626ac2 100644
--- a/Robocopy镜像文件小程序/MirrorFiles.ps1
+++ b/Robocopy镜像文件小程序/MirrorFiles v0.1.ps1	
@@ -1,49 +1,49 @@
-param(
-    [Parameter(Mandatory=$true)]
-    [string]$SourcePath,
-    
-    [Parameter(Mandatory=$true)]
-    [string]$TargetPath
-)
-
-try {
-    # Validate paths
-    if (-not (Test-Path $SourcePath)) {
-        throw "Source path does not exist: $SourcePath"
-    }
-    if (-not (Test-Path $TargetPath)) {
-        throw "Target path does not exist: $TargetPath"
-    }
-
-    # Create log file path
-    $logFile = "$PSScriptRoot\MirrorLog_$(Get-Date -Format 'yyyyMMdd_HHmmss').log"
-
-    Write-Host "[$(Get-Date)] Starting mirror operation..."
-    Write-Host "Source: $SourcePath"
-    Write-Host "Target: $TargetPath"
-    Write-Host "Log file: $logFile"
-
-    # Robocopy parameters:
-    # /MIR = Mirror mode (purge files in destination not in source)
-    # /NP = No progress percentage
-    # /NDL = No directory logging
-    # /LOG+: Append to log file
-    # /TEE = Output to console and log file
-    # /R:5 = 5 retries on failed files
-    # /W:5 = 5 second wait between retries
-    $robocopyArgs = @($SourcePath, $TargetPath, "/MIR", "/NP", "/NDL", "/LOG+:$logFile", "/TEE", "/R:5", "/W:5")
-    
-    $process = Start-Process robocopy -ArgumentList $robocopyArgs -NoNewWindow -PassThru -Wait
-
-    # Robocopy exit codes: https://ss64.com/nt/robocopy-exit.html
-    if ($process.ExitCode -ge 8) {
-        throw "Robocopy failed with exit code $($process.ExitCode)"
-    }
-
-    Write-Host "[$(Get-Date)] Mirror operation completed successfully" -ForegroundColor Green
-    Write-Host "Total processing time: $($process.ExitTime - $process.StartTime)"
-}
-catch {
-    Write-Host "[ERROR] $_" -ForegroundColor Red
-    exit 1
+param(
+    [Parameter(Mandatory=$true)]
+    [string]$SourcePath,
+    
+    [Parameter(Mandatory=$true)]
+    [string]$TargetPath
+)
+
+try {
+    # Validate paths
+    if (-not (Test-Path $SourcePath)) {
+        throw "Source path does not exist: $SourcePath"
+    }
+    if (-not (Test-Path $TargetPath)) {
+        throw "Target path does not exist: $TargetPath"
+    }
+
+    # Create log file path
+    $logFile = "$PSScriptRoot\MirrorLog_$(Get-Date -Format 'yyyyMMdd_HHmmss').log"
+
+    Write-Host "[$(Get-Date)] Starting mirror operation..."
+    Write-Host "Source: $SourcePath"
+    Write-Host "Target: $TargetPath"
+    Write-Host "Log file: $logFile"
+
+    # Robocopy parameters:
+    # /MIR = Mirror mode (purge files in destination not in source)
+    # /NP = No progress percentage
+    # /NDL = No directory logging
+    # /LOG+: Append to log file
+    # /TEE = Output to console and log file
+    # /R:5 = 5 retries on failed files
+    # /W:5 = 5 second wait between retries
+    $robocopyArgs = @($SourcePath, $TargetPath, "/MIR", "/NP", "/NDL", "/LOG+:$logFile", "/TEE", "/R:5", "/W:5")
+    
+    $process = Start-Process robocopy -ArgumentList $robocopyArgs -NoNewWindow -PassThru -Wait
+
+    # Robocopy exit codes: https://ss64.com/nt/robocopy-exit.html
+    if ($process.ExitCode -ge 8) {
+        throw "Robocopy failed with exit code $($process.ExitCode)"
+    }
+
+    Write-Host "[$(Get-Date)] Mirror operation completed successfully" -ForegroundColor Green
+    Write-Host "Total processing time: $($process.ExitTime - $process.StartTime)"
+}
+catch {
+    Write-Host "[ERROR] $_" -ForegroundColor Red
+    exit 1
 }
\ No newline at end of file
diff --git a/Robocopy镜像文件小程序/MirrorFiles v1.1.ps1 b/Robocopy镜像文件小程序/MirrorFiles v0.9.ps1
similarity index 97%
rename from Robocopy镜像文件小程序/MirrorFiles v1.1.ps1
rename to Robocopy镜像文件小程序/MirrorFiles v0.9.ps1
index 3e95ac7..54217b6 100644
--- a/Robocopy镜像文件小程序/MirrorFiles v1.1.ps1	
+++ b/Robocopy镜像文件小程序/MirrorFiles v0.9.ps1	
@@ -1,138 +1,138 @@
-param(
-    [string]$SourcePath,
-    [string]$TargetPath
-)
-
-Add-Type -AssemblyName System.Windows.Forms
-Add-Type -AssemblyName System.Drawing
-
-function Show-GUI {
-    $form = New-Object System.Windows.Forms.Form
-    $form.Text = "Folder Mirror Tool"
-    $form.Size = New-Object System.Drawing.Size(600,400)
-    $form.StartPosition = "CenterScreen"
-
-    # Source Controls
-    $lblSource = New-Object Windows.Forms.Label
-    $lblSource.Location = New-Object Drawing.Point(10,10)
-    $lblSource.Text = "Source Path:"
-    $txtSource = New-Object Windows.Forms.TextBox
-    $txtSource.Location = New-Object Drawing.Point(120,10)
-    $txtSource.Size = New-Object Drawing.Size(350,20)
-    $btnSource = New-Object Windows.Forms.Button
-    $btnSource.Location = New-Object Drawing.Point(480,10)
-    $btnSource.Text = "Browse"
-    $btnSource.Add_Click({
-        $folder = New-Object Windows.Forms.FolderBrowserDialog
-        if($folder.ShowDialog() -eq "OK") { $txtSource.Text = $folder.SelectedPath }
-    })
-
-    # Target Controls
-    $lblTarget = New-Object Windows.Forms.Label
-    $lblTarget.Location = New-Object Drawing.Point(10,40)
-    $lblTarget.Text = "Target Path:"
-    $txtTarget = New-Object Windows.Forms.TextBox
-    $txtTarget.Location = New-Object Drawing.Point(120,40)
-    $txtTarget.Size = New-Object Drawing.Size(350,20)
-    $btnTarget = New-Object Windows.Forms.Button
-    $btnTarget.Location = New-Object Drawing.Point(480,40)
-    $btnTarget.Text = "Browse"
-    $btnTarget.Add_Click({
-        $folder = New-Object Windows.Forms.FolderBrowserDialog
-        if($folder.ShowDialog() -eq "OK") { $txtTarget.Text = $folder.SelectedPath }
-    })
-
-    # Log Box
-    $txtLog = New-Object Windows.Forms.RichTextBox
-    $txtLog.Location = New-Object Drawing.Point(10,70)
-    $txtLog.Size = New-Object Drawing.Size(560,280)
-    $txtLog.ReadOnly = $true
-
-    # Start Button
-    $btnStart = New-Object Windows.Forms.Button
-    $btnStart.Location = New-Object Drawing.Point(480,350)
-    $btnStart.Size = New-Object Drawing.Size(90,30)
-    $btnStart.Text = "Start Mirror"
-    $btnStart.Add_Click({
-        $script:SourcePath = $txtSource.Text
-        $script:TargetPath = $txtTarget.Text
-        try {
-            # Reuse existing validation and mirror logic
-            if (-not (Test-Path $SourcePath)) { throw "Source path invalid" }
-            if (-not (Test-Path $TargetPath)) { throw "Target path invalid" }
-            
-            $txtLog.Text += "Starting mirror operation...`n"
-            $global:logFile = "$PSScriptRoot\MirrorLog_$(Get-Date -Format 'yyyyMMdd_HHmmss').log"
-            
-            Write-Host "Source: $SourcePath"
-            Write-Host "Target: $TargetPath"
-            Write-Host "Log file: $logFile"
-            
-            # Robocopy parameters:
-            # /MIR = Mirror mode (purge files in destination not in source)
-            # /NP = No progress percentage
-            # /NDL = No directory logging
-            # /LOG+: Append to log file
-            # /TEE = Output to console and log file
-            # /R:5 = 5 retries on failed files
-            # /W:5 = 5 second wait between retries
-            $robocopyArgs = @($SourcePath, $TargetPath, "/MIR", "/NP", "/NDL", "/LOG+:$logFile", "/TEE", "/R:5", "/W:5")
-            $process = Start-Process robocopy -ArgumentList $robocopyArgs -NoNewWindow -PassThru -Wait
-            
-            if ($process.ExitCode -ge 8) {
-                throw "Robocopy failed with exit code $($process.ExitCode)"
-            }
-            
-            $txtLog.Text += "Operation completed successfully!`n"
-        }
-        catch {
-            $txtLog.Text += "[ERROR] $_`n"
-            [Windows.Forms.MessageBox]::Show($_.Exception.Message, "Error")
-        }
-    })
-
-    # Add controls to form
-    $form.Controls.AddRange(@($lblSource, $txtSource, $btnSource, $lblTarget, $txtTarget, $btnTarget, $txtLog, $btnStart))
-    [void]$form.ShowDialog()
-}
-
-# Show GUI if no parameters provided
-if(-not $PSBoundParameters.ContainsKey('SourcePath') -or 
-   -not $PSBoundParameters.ContainsKey('TargetPath')) {
-    Show-GUI
-}
-else {
-    try {
-        if (-not (Test-Path $SourcePath)) { throw "Source path invalid" }
-        if (-not (Test-Path $TargetPath)) { throw "Target path invalid" }
-
-        $logFile = "$PSScriptRoot\MirrorLog_$(Get-Date -Format 'yyyyMMdd_HHmmss').log"
-        Write-Host "[$(Get-Date)] Starting mirror operation..."
-        
-        Write-Host "Source: $SourcePath"
-        Write-Host "Target: $TargetPath"
-        Write-Host "Log file: $logFile"
-
-        # Robocopy parameters:
-        # /MIR = Mirror mode (purge files in destination not in source)
-        # /NP = No progress percentage
-        # /NDL = No directory logging
-        # /LOG+: Append to log file
-        # /TEE = Output to console and log file
-        # /R:5 = 5 retries on failed files
-        # /W:5 = 5 second wait between retries
-        $robocopyArgs = @($SourcePath, $TargetPath, "/MIR", "/NP", "/NDL", "/LOG+:$logFile", "/TEE", "/R:5", "/W:5")
-        $process = Start-Process robocopy -ArgumentList $robocopyArgs -NoNewWindow -PassThru -Wait
-        
-        if ($process.ExitCode -ge 8) {
-            throw "Robocopy failed with exit code $($process.ExitCode)"
-        }
-    
-        Write-Host "[$(Get-Date)] Mirror operation completed successfully" -ForegroundColor Green
-        Write-Host "Total processing time: $($process.ExitTime - $process.StartTime)"
-    }
-    catch {
-        Write-Host "[ERROR] $_" -ForegroundColor Red
-        exit 1
-    }
+param(
+    [string]$SourcePath,
+    [string]$TargetPath
+)
+
+Add-Type -AssemblyName System.Windows.Forms
+Add-Type -AssemblyName System.Drawing
+
+function Show-GUI {
+    $form = New-Object System.Windows.Forms.Form
+    $form.Text = "Folder Mirror Tool"
+    $form.Size = New-Object System.Drawing.Size(600,400)
+    $form.StartPosition = "CenterScreen"
+
+    # Source Controls
+    $lblSource = New-Object Windows.Forms.Label
+    $lblSource.Location = New-Object Drawing.Point(10,10)
+    $lblSource.Text = "Source Path:"
+    $txtSource = New-Object Windows.Forms.TextBox
+    $txtSource.Location = New-Object Drawing.Point(120,10)
+    $txtSource.Size = New-Object Drawing.Size(350,20)
+    $btnSource = New-Object Windows.Forms.Button
+    $btnSource.Location = New-Object Drawing.Point(480,10)
+    $btnSource.Text = "Browse"
+    $btnSource.Add_Click({
+        $folder = New-Object Windows.Forms.FolderBrowserDialog
+        if($folder.ShowDialog() -eq "OK") { $txtSource.Text = $folder.SelectedPath }
+    })
+
+    # Target Controls
+    $lblTarget = New-Object Windows.Forms.Label
+    $lblTarget.Location = New-Object Drawing.Point(10,40)
+    $lblTarget.Text = "Target Path:"
+    $txtTarget = New-Object Windows.Forms.TextBox
+    $txtTarget.Location = New-Object Drawing.Point(120,40)
+    $txtTarget.Size = New-Object Drawing.Size(350,20)
+    $btnTarget = New-Object Windows.Forms.Button
+    $btnTarget.Location = New-Object Drawing.Point(480,40)
+    $btnTarget.Text = "Browse"
+    $btnTarget.Add_Click({
+        $folder = New-Object Windows.Forms.FolderBrowserDialog
+        if($folder.ShowDialog() -eq "OK") { $txtTarget.Text = $folder.SelectedPath }
+    })
+
+    # Log Box
+    $txtLog = New-Object Windows.Forms.RichTextBox
+    $txtLog.Location = New-Object Drawing.Point(10,70)
+    $txtLog.Size = New-Object Drawing.Size(560,280)
+    $txtLog.ReadOnly = $true
+
+    # Start Button
+    $btnStart = New-Object Windows.Forms.Button
+    $btnStart.Location = New-Object Drawing.Point(480,350)
+    $btnStart.Size = New-Object Drawing.Size(90,30)
+    $btnStart.Text = "Start Mirror"
+    $btnStart.Add_Click({
+        $script:SourcePath = $txtSource.Text
+        $script:TargetPath = $txtTarget.Text
+        try {
+            # Reuse existing validation and mirror logic
+            if (-not (Test-Path $SourcePath)) { throw "Source path invalid" }
+            if (-not (Test-Path $TargetPath)) { throw "Target path invalid" }
+            
+            $txtLog.Text += "Starting mirror operation...`n"
+            $global:logFile = "$PSScriptRoot\MirrorLog_$(Get-Date -Format 'yyyyMMdd_HHmmss').log"
+            
+            Write-Host "Source: $SourcePath"
+            Write-Host "Target: $TargetPath"
+            Write-Host "Log file: $logFile"
+            
+            # Robocopy parameters:
+            # /MIR = Mirror mode (purge files in destination not in source)
+            # /NP = No progress percentage
+            # /NDL = No directory logging
+            # /LOG+: Append to log file
+            # /TEE = Output to console and log file
+            # /R:5 = 5 retries on failed files
+            # /W:5 = 5 second wait between retries
+            $robocopyArgs = @($SourcePath, $TargetPath, "/MIR", "/NP", "/NDL", "/LOG+:$logFile", "/TEE", "/R:5", "/W:5")
+            $process = Start-Process robocopy -ArgumentList $robocopyArgs -NoNewWindow -PassThru -Wait
+            
+            if ($process.ExitCode -ge 8) {
+                throw "Robocopy failed with exit code $($process.ExitCode)"
+            }
+            
+            $txtLog.Text += "Operation completed successfully!`n"
+        }
+        catch {
+            $txtLog.Text += "[ERROR] $_`n"
+            [Windows.Forms.MessageBox]::Show($_.Exception.Message, "Error")
+        }
+    })
+
+    # Add controls to form
+    $form.Controls.AddRange(@($lblSource, $txtSource, $btnSource, $lblTarget, $txtTarget, $btnTarget, $txtLog, $btnStart))
+    [void]$form.ShowDialog()
+}
+
+# Show GUI if no parameters provided
+if(-not $PSBoundParameters.ContainsKey('SourcePath') -or 
+   -not $PSBoundParameters.ContainsKey('TargetPath')) {
+    Show-GUI
+}
+else {
+    try {
+        if (-not (Test-Path $SourcePath)) { throw "Source path invalid" }
+        if (-not (Test-Path $TargetPath)) { throw "Target path invalid" }
+
+        $logFile = "$PSScriptRoot\MirrorLog_$(Get-Date -Format 'yyyyMMdd_HHmmss').log"
+        Write-Host "[$(Get-Date)] Starting mirror operation..."
+        
+        Write-Host "Source: $SourcePath"
+        Write-Host "Target: $TargetPath"
+        Write-Host "Log file: $logFile"
+
+        # Robocopy parameters:
+        # /MIR = Mirror mode (purge files in destination not in source)
+        # /NP = No progress percentage
+        # /NDL = No directory logging
+        # /LOG+: Append to log file
+        # /TEE = Output to console and log file
+        # /R:5 = 5 retries on failed files
+        # /W:5 = 5 second wait between retries
+        $robocopyArgs = @($SourcePath, $TargetPath, "/MIR", "/NP", "/NDL", "/LOG+:$logFile", "/TEE", "/R:5", "/W:5")
+        $process = Start-Process robocopy -ArgumentList $robocopyArgs -NoNewWindow -PassThru -Wait
+        
+        if ($process.ExitCode -ge 8) {
+            throw "Robocopy failed with exit code $($process.ExitCode)"
+        }
+    
+        Write-Host "[$(Get-Date)] Mirror operation completed successfully" -ForegroundColor Green
+        Write-Host "Total processing time: $($process.ExitTime - $process.StartTime)"
+    }
+    catch {
+        Write-Host "[ERROR] $_" -ForegroundColor Red
+        exit 1
+    }
 }
\ No newline at end of file
diff --git a/Robocopy镜像文件小程序/MirrorFiles v1.2.ps1 b/Robocopy镜像文件小程序/MirrorFiles v1.2.ps1
index 96bcea6..f5b1429 100644
--- a/Robocopy镜像文件小程序/MirrorFiles v1.2.ps1	
+++ b/Robocopy镜像文件小程序/MirrorFiles v1.2.ps1	
@@ -9,9 +9,9 @@ Add-Type -AssemblyName System.Drawing
 function Show-GUI {
     $form = New-Object System.Windows.Forms.Form
     $form.Text = "Folder Mirror Tool"
-    $form.Size = New-Object System.Drawing.Size(600,450)  # Increased height
+    $form.Size = New-Object System.Drawing.Size(600,450)
     $form.StartPosition = "CenterScreen"
-    $form.FormBorderStyle = [System.Windows.Forms.FormBorderStyle]::FixedDialog  # Disable resizing
+    $form.FormBorderStyle = [System.Windows.Forms.FormBorderStyle]::FixedDialog
 
     # Source Controls
     $lblSource = New-Object Windows.Forms.Label
@@ -44,68 +44,175 @@ function Show-GUI {
     })
 
     # Log Box
-    $txtLog = New-Object Windows.Forms.RichTextBox
-    $txtLog.Location = New-Object Drawing.Point(10,70)
-    $txtLog.Size = New-Object Drawing.Size(560,300)  # Increased height
-    $txtLog.ReadOnly = $true
+    $script:txtLogGui = New-Object Windows.Forms.RichTextBox
+    $script:txtLogGui.Location = New-Object Drawing.Point(10,70)
+    $script:txtLogGui.Size = New-Object Drawing.Size(560,300)
+    $script:txtLogGui.ReadOnly = $true
+    $script:txtLogGui.Font = New-Object System.Drawing.Font("Consolas", 8)
+    $script:txtLogGui.WordWrap = $false
+    $script:txtLogGui.ScrollBars = [System.Windows.Forms.RichTextBoxScrollBars]::Both
 
     # Start Button
-    $btnStart = New-Object Windows.Forms.Button
-    $btnStart.Location = New-Object Drawing.Point(480,370)  # Adjusted position
-    $btnStart.Size = New-Object Drawing.Size(90,30)
-    $btnStart.Text = "Start Mirror"
-    $btnStart.Add_Click({
-        $script:SourcePath = $txtSource.Text
-        $script:TargetPath = $txtTarget.Text
+    $script:btnStartGui = New-Object Windows.Forms.Button
+    $script:btnStartGui.Location = New-Object Drawing.Point(480,380)
+    $script:btnStartGui.Size = New-Object Drawing.Size(90,30)
+    $script:btnStartGui.Text = "Start Mirror"
+    $script:btnStartGui.Add_Click({
+        $currentSourcePath = $txtSource.Text
+        $currentTargetPath = $txtTarget.Text
+
         try {
-            # Reuse existing validation and mirror logic
-            if (-not (Test-Path $SourcePath)) { throw "Source path invalid" }
-            if (-not (Test-Path $TargetPath)) { throw "Target path invalid" }
-            
-            $txtLog.Text += "Starting mirror operation...`n"
-            $global:logFile = "$PSScriptRoot\MirrorLog_$(Get-Date -Format 'yyyyMMdd_HHmmss').log"
-            
-            Write-Host "Source: $SourcePath"
-            Write-Host "Target: $TargetPath"
-            Write-Host "Log file: $logFile"
-            
-            # Robocopy parameters:
-            # /MIR = Mirror mode (purge files in destination not in source)
-            # /NP = No progress percentage
-            # /NDL = No directory logging
-            # /LOG+: Append to log file
-            # /TEE = Output to console and log file
-            # /R:5 = 5 retries on failed files
-            # /W:5 = 5 second wait between retries
-            $robocopyArgs = @($SourcePath, $TargetPath, "/MIR", "/NP", "/NDL", "/LOG+:$logFile", "/TEE", "/R:5", "/W:5")
-            $process = Start-Process robocopy -ArgumentList $robocopyArgs -NoNewWindow -PassThru -Wait
-            
-            if ($process.ExitCode -ge 8) {
-                throw "Robocopy failed with exit code $($process.ExitCode)"
+            if (-not (Test-Path $currentSourcePath -PathType Container)) { throw "Source path invalid or not a folder." }
+            if (-not (Test-Path $currentTargetPath -PathType Container)) {
+                try {
+                    $script:txtLogGui.AppendText("Target path does not exist. Attempting to create: $currentTargetPath`n")
+                    $null = New-Item -ItemType Directory -Path $currentTargetPath -Force -ErrorAction Stop
+                    $script:txtLogGui.AppendText("Created target directory: $currentTargetPath`n")
+                } catch {
+                    throw "Target path invalid or not a folder, and could not be created: $($_.Exception.Message)"
+                }
             }
             
-            $txtLog.Text += "Operation completed successfully!`n"
+            $script:txtLogGui.Clear()
+            $script:txtLogGui.AppendText("Starting mirror operation...`n")
+            $script:txtLogGui.AppendText("Source: $currentSourcePath`n")
+            $script:txtLogGui.AppendText("Target: $currentTargetPath`n")
+
+            $global:logFile = "$PSScriptRoot\MirrorLog_$(Get-Date -Format 'yyyyMMdd_HHmmss').log"
+            $script:txtLogGui.AppendText("Detailed log will also be saved to: $global:logFile`n`n")
+
+            # Robocopy parameters for GUI (Verbose, but no per-file % progress to keep GUI clean)
+            $robocopyArgs = @(
+                "`"$currentSourcePath`"", 
+                "`"$currentTargetPath`"",
+                "/MIR",      # Mirror mode
+                "/V",        # Verbose output (shows skipped files)
+                "/FP",       # Include Full Pathname of files in output
+                "/BYTES",    # Print sizes as bytes
+                "/NP",       # No Progress percentage (to keep GUI log cleaner)
+                # Removed /NDL (No Directory List) -> will show directory list
+                # Removed /NJH (No Job Header) -> will show job header
+                # Removed /NJS (No Job Summary) -> will show job summary
+                "/LOG+:`"$global:logFile`"", 
+                "/R:5",      # 5 retries on failed files
+                "/W:5"       # 5 second wait between retries
+            )
+
+            $script:btnStartGui.Enabled = $false 
+
+            $process = New-Object System.Diagnostics.Process
+            $process.StartInfo.FileName = "robocopy.exe"
+            $process.StartInfo.Arguments = $robocopyArgs -join " "
+            $process.StartInfo.UseShellExecute = $false
+            $process.StartInfo.RedirectStandardOutput = $true
+            $process.StartInfo.RedirectStandardError = $true
+            $process.StartInfo.CreateNoWindow = $true
+            $process.EnableRaisingEvents = $true
+
+            $process.add_OutputDataReceived({
+                if (-not [string]::IsNullOrEmpty($_.Data)) {
+                    $script:txtLogGui.BeginInvoke([Action[string]]{
+                        param($line)
+                        $script:txtLogGui.AppendText("$line`r`n") 
+                        $script:txtLogGui.ScrollToCaret()
+                    }, $_.Data)
+                }
+            })
+
+            $process.add_ErrorDataReceived({
+                if (-not [string]::IsNullOrEmpty($_.Data)) {
+                    $script:txtLogGui.BeginInvoke([Action[string]]{
+                        param($line)
+                        # Robocopy often uses stderr for summary or non-critical info too,
+                        # so not always coloring it as a hard error.
+                        # Let Robocopy's output speak for itself mostly.
+                        $script:txtLogGui.AppendText("[STDERR] $line`r`n")
+                        $script:txtLogGui.ScrollToCaret()
+                    }, $_.Data)
+                }
+            })
+            
+            $process.add_Exited({
+                $exitCode = $process.ExitCode
+                $script:txtLogGui.BeginInvoke([Action]{
+                    $script:txtLogGui.AppendText("`n------------------------------------`n")
+                    $script:txtLogGui.AppendText("Robocopy process finished.`n")
+                    $script:txtLogGui.AppendText("Robocopy Exit Code: $exitCode`n")
+
+                    if ($exitCode -ge 8) {
+                        $script:txtLogGui.SelectionStart = $script:txtLogGui.TextLength
+                        $script:txtLogGui.SelectionLength = 0
+                        $script:txtLogGui.SelectionColor = [System.Drawing.Color]::Red
+                        $script:txtLogGui.AppendText("Robocopy reported errors or critical failures (Code >= 8). Check log for details.`n")
+                        $script:txtLogGui.SelectionColor = $script:txtLogGui.ForeColor
+                        [Windows.Forms.MessageBox]::Show("Robocopy completed with errors or critical failures (Exit Code: $exitCode). Check Robocopy output and the log file for details.", "Robocopy Error", [System.Windows.Forms.MessageBoxButtons]::OK, [System.Windows.Forms.MessageBoxIcon]::Error)
+                    } elseif ($exitCode -eq 0) {
+                         $script:txtLogGui.AppendText("Robocopy: No files were copied. No failure was encountered. No files were mismatched. The files already exist in the destination directory; therefore, the copy operation was skipped.`n")
+                    } elseif ($exitCode -gt 0 -and $exitCode -lt 8) { 
+                        $script:txtLogGui.SelectionStart = $script:txtLogGui.TextLength
+                        $script:txtLogGui.SelectionLength = 0
+                        $script:txtLogGui.SelectionColor = [System.Drawing.Color]::DarkGreen
+                        $script:txtLogGui.AppendText("Robocopy completed. Some files may have been copied, or extra/mismatched files detected (Code $exitCode). This is generally considered successful or informational. Review output for details.`n")
+                        $script:txtLogGui.SelectionColor = $script:txtLogGui.ForeColor
+                    }
+                    $script:txtLogGui.AppendText("Log file: $global:logFile`n")
+                    $script:txtLogGui.ScrollToCaret()
+                    $script:btnStartGui.Enabled = $true 
+                })
+                $process.Close()
+                $process.Dispose()
+            })
+
+            $process.Start() | Out-Null
+            $process.BeginOutputReadLine()
+            $process.BeginErrorReadLine()
         }
         catch {
-            $txtLog.Text += "[ERROR] $_`n"
-            [Windows.Forms.MessageBox]::Show($_.Exception.Message, "Error")
+            $errorMessage = $_.Exception.Message
+            if ($_.Exception.InnerException) { $errorMessage += " Inner: " + $_.Exception.InnerException.Message }
+            $script:txtLogGui.AppendText("[SCRIPT ERROR] $errorMessage`n")
+            [Windows.Forms.MessageBox]::Show($errorMessage, "Script Error", [System.Windows.Forms.MessageBoxButtons]::OK, [System.Windows.Forms.MessageBoxIcon]::Error)
+            if ($script:btnStartGui) {$script:btnStartGui.Enabled = $true} 
         }
     })
 
-    # Add controls to form
-    $form.Controls.AddRange(@($lblSource, $txtSource, $btnSource, $lblTarget, $txtTarget, $btnTarget, $txtLog, $btnStart))
+    $form.Controls.AddRange(@(
+        $lblSource, $txtSource, $btnSource, 
+        $lblTarget, $txtTarget, $btnTarget, 
+        $script:txtLogGui, 
+        $script:btnStartGui
+    ))
+
+    if ($SourcePath) { $txtSource.Text = $SourcePath }
+    if ($TargetPath) { $txtTarget.Text = $TargetPath }
+    
+    $form.Add_Shown({
+        # If parameters were passed and GUI is shown, optionally auto-start
+        # For now, we require manual click even if params are pre-filled.
+        # if ($txtSource.Text -and $txtTarget.Text) { $script:btnStartGui.PerformClick() }
+    })
+
     [void]$form.ShowDialog()
 }
 
-# Show GUI if no parameters provided
-if(-not $PSBoundParameters.ContainsKey('SourcePath') -or 
-   -not $PSBoundParameters.ContainsKey('TargetPath')) {
-    Show-GUI
+# --- Main script execution logic ---
+
+if (-not $PSBoundParameters.ContainsKey('SourcePath') -or -not $PSBoundParameters.ContainsKey('TargetPath')) {
+    Show-GUI # Pass potentially existing parameters for pre-filling
 }
 else {
+    $cliErrorOccurred = $false
     try {
-        if (-not (Test-Path $SourcePath)) { throw "Source path invalid" }
-        if (-not (Test-Path $TargetPath)) { throw "Target path invalid" }
+        if (-not (Test-Path $SourcePath -PathType Container)) { throw "Source path '$SourcePath' invalid or not a folder." }
+        if (-not (Test-Path $TargetPath -PathType Container)) {
+            Write-Host "Target path '$TargetPath' does not exist. Attempting to create..." -ForegroundColor Yellow
+            try {
+                $null = New-Item -ItemType Directory -Path $TargetPath -Force -ErrorAction Stop
+                Write-Host "Created target directory: $TargetPath" -ForegroundColor Green
+            } catch {
+                throw "Target path '$TargetPath' invalid or not a folder, and could not be created: $($_.Exception.Message)"
+            }
+        }
 
         $logFile = "$PSScriptRoot\MirrorLog_$(Get-Date -Format 'yyyyMMdd_HHmmss').log"
         Write-Host "[$(Get-Date)] Starting mirror operation..."
@@ -114,26 +221,58 @@ else {
         Write-Host "Target: $TargetPath"
         Write-Host "Log file: $logFile"
 
-        # Robocopy parameters:
-        # /MIR = Mirror mode (purge files in destination not in source)
-        # /NP = No progress percentage
-        # /NDL = No directory logging
-        # /LOG+: Append to log file
-        # /TEE = Output to console and log file
-        # /R:5 = 5 retries on failed files
-        # /W:5 = 5 second wait between retries
-        $robocopyArgs = @($SourcePath, $TargetPath, "/MIR", "/NP", "/NDL", "/LOG+:$logFile", "/TEE", "/R:5", "/W:5")
-        $process = Start-Process robocopy -ArgumentList $robocopyArgs -NoNewWindow -PassThru -Wait
+        # Robocopy parameters for CLI (Fully verbose, including progress)
+        $robocopyArgs = @(
+            "`"$SourcePath`"", 
+            "`"$TargetPath`"",
+            "/MIR",      # Mirror mode
+            "/V",        # Verbose output (shows skipped files)
+            "/FP",       # Include Full Pathname of files in output
+            "/BYTES",    # Print sizes as bytes
+            # Removed /NP -> will show progress percentage
+            # Removed /NDL -> will show directory list
+            # Removed /NJH -> will show job header
+            # Removed /NJS -> will show job summary
+            "/TEE",      # Output to console AND log file
+            "/LOG+:`"$logFile`"",
+            "/R:5",
+            "/W:5"
+        )
         
+        Write-Host "Executing: robocopy $($robocopyArgs -join " ")"
+        Write-Host "------------------------------------ ROBOCOPY OUTPUT START ------------------------------------"
+        $process = Start-Process robocopy -ArgumentList $robocopyArgs -NoNewWindow -PassThru -Wait
+        Write-Host "------------------------------------ ROBOCOPY OUTPUT END --------------------------------------"
+        Write-Host "Robocopy Exit Code: $($process.ExitCode)"
+
+
         if ($process.ExitCode -ge 8) {
-            throw "Robocopy failed with exit code $($process.ExitCode)"
+            throw "Robocopy reported errors or critical failures with exit code $($process.ExitCode). Check output above and log: $logFile"
+        } elseif ($process.ExitCode -eq 0) {
+             Write-Host "[$(Get-Date)] Robocopy: No files were copied. No failure was encountered. No files were mismatched. (Exit Code: 0)" -ForegroundColor Cyan
+        } else { # 1 to 7
+            Write-Host "[$(Get-Date)] Robocopy completed. Some files may have been copied, or extra/mismatched files detected (Exit Code: $($process.ExitCode)). This is generally considered successful or informational. Review output for details." -ForegroundColor Cyan
         }
     
-        Write-Host "[$(Get-Date)] Mirror operation completed successfully" -ForegroundColor Green
-        Write-Host "Total processing time: $($process.ExitTime - $process.StartTime)"
+        Write-Host "[$(Get-Date)] Mirror operation main phase completed." -ForegroundColor Green
+        if ($process.ExitTime -and $process.StartTime) { 
+            Write-Host "Total Robocopy processing time: $($process.ExitTime - $process.StartTime)"
+        }
     }
     catch {
-        Write-Host "[ERROR] $_" -ForegroundColor Red
-        exit 1
+        Write-Host "[SCRIPT ERROR] $($_.Exception.Message)" -ForegroundColor Red
+        if ($_.Exception.InnerException) { Write-Host "[INNER SCRIPT ERROR] $($_.Exception.InnerException.Message)" -ForegroundColor Red }
+        $cliErrorOccurred = $true
+    }
+    finally {
+        if ($cliErrorOccurred) {
+            Write-Host "Operation finished with errors." -ForegroundColor Red
+        } else {
+            Write-Host "Operation finished." -ForegroundColor Green
+        }
+        Read-Host "Press Enter to exit..."
+        if ($cliErrorOccurred) {
+             if ($Host.Name -eq "ConsoleHost") { exit 1 } # Exit with error code for automation
+        }
     }
 }
\ No newline at end of file