diff --git a/Scripts/3_Deploy.ps1 b/Scripts/3_Deploy.ps1
index 810818c5..88afbeb1 100644
--- a/Scripts/3_Deploy.ps1
+++ b/Scripts/3_Deploy.ps1
@@ -408,22 +408,34 @@ If (-not $isAdmin) {
         )
         WriteInfoHighlighted "Creating VM $($VMConfig.VMName)"
         WriteInfo "`t Looking for Parent Disk"
-        $serverparent = Get-ChildItem "$PSScriptRoot\ParentDisks\" -Recurse | Where-Object Name -eq $VMConfig.ParentVHD
-
-        if ($serverparent -eq $null) {
-            WriteErrorAndExit "Server parent disk $($VMConfig.ParentVHD) not found."
+        if ($VMConfig.ParentVHD){
+            $serverparent = Get-ChildItem "$PSScriptRoot\ParentDisks\" -Recurse | Where-Object Name -eq $VMConfig.ParentVHD
+            if ($serverparent -eq $null) {
+                WriteErrorAndExit "Server parent disk $($VMConfig.ParentVHD) not found."
+            }else{
+                WriteInfo "`t`t Server parent disk $($serverparent.Name) found"
+            }
         }else{
-            WriteInfo "`t`t Server parent disk $($serverparent.Name) found"
+             WriteInfo "`t`t Server parent disk not specified. VHD will be created"
         }
 
         $VMname=$Labconfig.Prefix+$VMConfig.VMName
+
         if ($serverparent.Extension -eq ".vhdx"){
             $vhdpath="$LabFolder\VMs\$VMname\Virtual Hard Disks\$VMname.vhdx"
         }elseif($serverparent.Extension -eq ".vhd"){
             $vhdpath="$LabFolder\VMs\$VMname\Virtual Hard Disks\$VMname.vhd"
+        }else{
+            $vhdpath="$LabFolder\VMs\$VMname\Virtual Hard Disks\$VMname.vhdx"
+        }
+
+        if ($serverparent){
+            WriteInfo "`t Creating OS VHD from parent disk $($VMConfig.ParentVHD)"
+            New-VHD -ParentPath $serverparent.fullname -Path $vhdpath
+        }else{
+            WriteInfo "`t Creating blank OS VHD"
+            New-VHD -Path $vhdpath -SizeBytes 127GB
         }
-        WriteInfo "`t Creating OS VHD"
-        New-VHD -ParentPath $serverparent.fullname -Path $vhdpath
 
         if ($VMConfig.VMVersion){
             $VMTemp = New-VM -Path "$LabFolder\VMs" -Name $VMname -Generation 2 -MemoryStartupBytes $VMConfig.MemoryStartupBytes -SwitchName $SwitchName  -VHDPath $vhdPath -Version $VMConfig.VMVersion
@@ -443,7 +455,14 @@ If (-not $isAdmin) {
         if ($VMTemp.AutomaticCheckpointsEnabled -eq $True){
             $VMTemp | Set-VM -AutomaticCheckpointsEnabled $False
         }
-        $VMTemp | Set-VMFirmware -EnableSecureBoot Off
+
+        if ($VMConfig.SecureBoot -eq "Linux"){
+            WriteInfo "`t Configuring Secure Boot to Linux"
+            $VMTemp | Set-VMFirmware -SecureBootTemplateId ([guid]'272e7447-90a4-4563-a4b9-8e4ab00526ce')
+        }else{
+            WriteInfo "`t Disabling Secure Boot"
+            $VMTemp | Set-VMFirmware -EnableSecureBoot Off
+        }
 
         # only Debian Buster supports Secure Boot
         #$vm | Set-VMFirmware -EnableSecureBoot On -SecureBootTemplateId "272e7447-90a4-4563-a4b9-8e4ab00526ce" # -SecureBootTemplate MicrosoftUEFICertificateAuthority
@@ -534,26 +553,37 @@ If (-not $isAdmin) {
         )
         WriteInfoHighlighted "Creating VM $($VMConfig.VMName)"
         WriteInfo "`t Looking for Parent Disk"
-        $serverparent=Get-ChildItem "$PSScriptRoot\ParentDisks\" -Recurse | Where-Object Name -eq $VMConfig.ParentVHD
-
-        if ($serverparent -eq $null){
-            WriteErrorAndExit "Server parent disk $($VMConfig.ParentVHD) not found."
+        if ($VMConfig.ParentVHD){
+            $serverparent = Get-ChildItem "$PSScriptRoot\ParentDisks\" -Recurse | Where-Object Name -eq $VMConfig.ParentVHD
+            if ($serverparent -eq $null) {
+                WriteErrorAndExit "Server parent disk $($VMConfig.ParentVHD) not found."
+            }else{
+                WriteInfo "`t`t Server parent disk $($serverparent.Name) found"
+            }
         }else{
-            WriteInfo "`t`t Server parent disk $($serverparent.Name) found"
+             WriteInfo "`t`t Server parent disk not specified. VHD will be created"
         }
 
         $VMname=$Labconfig.Prefix+$VMConfig.VMName
+
         if ($serverparent.Extension -eq ".vhdx"){
             $vhdpath="$LabFolder\VMs\$VMname\Virtual Hard Disks\$VMname.vhdx"
         }elseif($serverparent.Extension -eq ".vhd"){
             $vhdpath="$LabFolder\VMs\$VMname\Virtual Hard Disks\$VMname.vhd"
+        }else{
+            $vhdpath="$LabFolder\VMs\$VMname\Virtual Hard Disks\$VMname.vhdx"
         }
-        WriteInfoHighlighted "`t Creating OS VHD"
-        New-VHD -ParentPath $serverparent.fullname -Path $vhdpath
 
-        #Get VM Version
-        [System.Version]$BuildVersion=(Get-WindowsImage -ImagePath $VHDPath -Index 1).Version
-        WriteInfo "`t VM Version is $($BuildVersion.Build).$($BuildVersion.Revision)"
+        if ($serverparent){
+            WriteInfo "`t Creating OS VHD from parent disk $($VMConfig.ParentVHD)"
+            New-VHD -ParentPath $serverparent.fullname -Path $vhdpath
+            #Get VM Version
+            [System.Version]$BuildVersion=(Get-WindowsImage -ImagePath $VHDPath -Index 1).Version
+            WriteInfo "`t VM Version is $($BuildVersion.Build).$($BuildVersion.Revision)"
+        }else{
+            WriteInfo "`t Creating blank OS VHD"
+            New-VHD -Path $vhdpath -SizeBytes 127GB
+        }
 
         WriteInfo "`t Creating VM"
         if ($VMConfig.VMVersion){
@@ -662,6 +692,15 @@ If (-not $isAdmin) {
             }
         }
 
+        #configure secure boot
+        if ($VMConfig.SecureBoot -eq "Linux"){
+            WriteInfo "`t Configuring Secure Boot to Linux"
+            $VMTemp | Set-VMFirmware -SecureBootTemplateId ([guid]'272e7447-90a4-4563-a4b9-8e4ab00526ce')
+        }elseif ($VMConfig.SecureBoot -eq "Disabled"){
+            WriteInfo "`t Disabling Secure Boot"
+            $VMTemp | Set-VMFirmware -EnableSecureBoot Off
+        }
+
         #set MemoryMinimumBytes
         if ($VMConfig.MemoryMinimumBytes -ne $null){
             WriteInfo "`t Configuring MemoryMinimumBytes to $($VMConfig.MemoryMinimumBytes/1MB)MB"
@@ -770,50 +809,52 @@ If (-not $isAdmin) {
             WriteInfo "`t`t Subnet ID is 0 with NativeVLAN 0. AllowedVlanIDList is $($LabConfig.AllowedVLANs)"
             $VMTemp | Set-VMNetworkAdapterVlan -VMNetworkAdapterName "Management*" -Trunk -NativeVlanId 0 -AllowedVlanIdList "$AllowedVLANs"
 
-        #Create Unattend file
-        if ($VMConfig.Unattend -eq "NoDjoin" -or $VMConfig.SkipDjoin){
-            WriteInfo "`t Skipping Djoin"
-            if ($VMConfig.AdditionalLocalAdmin){
-                WriteInfo "`t Additional Local Admin $($VMConfig.AdditionalLocalAdmin) will be added"
-                $AdditionalLocalAccountXML=AdditionalLocalAccountXML -AdditionalAdminName $VMConfig.AdditionalLocalAdmin -AdminPassword $LabConfig.AdminPassword
-                $unattendfile=CreateUnattendFileNoDjoin -ComputerName $Name -AdminPassword $LabConfig.AdminPassword -RunSynchronous $RunSynchronous -AdditionalAccount $AdditionalLocalAccountXML -TimeZone $TimeZone
-            }else{
-                $unattendfile=CreateUnattendFileNoDjoin -ComputerName $Name -AdminPassword $LabConfig.AdminPassword -RunSynchronous $RunSynchronous -TimeZone $TimeZone
+        if ($serverparent){
+            #Create Unattend file if there was server parent disk. If not, blank was created and it does not make sense to create answer file
+            if ($VMConfig.Unattend -eq "NoDjoin" -or $VMConfig.SkipDjoin){
+                WriteInfo "`t Skipping Djoin"
+                if ($VMConfig.AdditionalLocalAdmin){
+                    WriteInfo "`t Additional Local Admin $($VMConfig.AdditionalLocalAdmin) will be added"
+                    $AdditionalLocalAccountXML=AdditionalLocalAccountXML -AdditionalAdminName $VMConfig.AdditionalLocalAdmin -AdminPassword $LabConfig.AdminPassword
+                    $unattendfile=CreateUnattendFileNoDjoin -ComputerName $Name -AdminPassword $LabConfig.AdminPassword -RunSynchronous $RunSynchronous -AdditionalAccount $AdditionalLocalAccountXML -TimeZone $TimeZone
+                }else{
+                    $unattendfile=CreateUnattendFileNoDjoin -ComputerName $Name -AdminPassword $LabConfig.AdminPassword -RunSynchronous $RunSynchronous -TimeZone $TimeZone
+                }
+            }elseif($VMConfig.Win2012Djoin -or $VMConfig.Unattend -eq "DjoinCred"){
+                WriteInfoHighlighted "`t Creating Unattend with win2012-ish domain join"
+                $unattendfile=CreateUnattendFileWin2012 -ComputerName $Name -AdminPassword $LabConfig.AdminPassword -DomainName $Labconfig.DomainName -RunSynchronous $RunSynchronous -TimeZone $TimeZone
+
+            }elseif($VMConfig.Unattend -eq "DjoinBlob" -or -not ($VMConfig.Unattend)){
+                WriteInfoHighlighted "`t Creating Unattend with djoin blob"
+                $path="c:\$vmname.txt"
+                Invoke-Command -VMGuid $DC.id -Credential $cred  -ScriptBlock {param($Name,$path,$Labconfig); djoin.exe /provision /domain $labconfig.DomainNetbiosName /machine $Name /savefile $path /machineou "OU=$($Labconfig.DefaultOUName),$($Labconfig.DN)"} -ArgumentList $Name,$path,$Labconfig
+                $blob=Invoke-Command -VMGuid $DC.id -Credential $cred -ScriptBlock {param($path); get-content $path} -ArgumentList $path
+                Invoke-Command -VMGuid $DC.id -Credential $cred -ScriptBlock {param($path); Remove-Item $path} -ArgumentList $path
+                $unattendfile=CreateUnattendFileBlob -Blob $blob.Substring(0,$blob.Length-1) -AdminPassword $LabConfig.AdminPassword -RunSynchronous $RunSynchronous -TimeZone $TimeZone
+            }elseif($VMConfig.Unattend -eq "None"){
+                $unattendFile=$Null
             }
-        }elseif($VMConfig.Win2012Djoin -or $VMConfig.Unattend -eq "DjoinCred"){
-            WriteInfoHighlighted "`t Creating Unattend with win2012-ish domain join"
-            $unattendfile=CreateUnattendFileWin2012 -ComputerName $Name -AdminPassword $LabConfig.AdminPassword -DomainName $Labconfig.DomainName -RunSynchronous $RunSynchronous -TimeZone $TimeZone
-
-        }elseif($VMConfig.Unattend -eq "DjoinBlob" -or -not ($VMConfig.Unattend)){
-            WriteInfoHighlighted "`t Creating Unattend with djoin blob"
-            $path="c:\$vmname.txt"
-            Invoke-Command -VMGuid $DC.id -Credential $cred  -ScriptBlock {param($Name,$path,$Labconfig); djoin.exe /provision /domain $labconfig.DomainNetbiosName /machine $Name /savefile $path /machineou "OU=$($Labconfig.DefaultOUName),$($Labconfig.DN)"} -ArgumentList $Name,$path,$Labconfig
-            $blob=Invoke-Command -VMGuid $DC.id -Credential $cred -ScriptBlock {param($path); get-content $path} -ArgumentList $path
-            Invoke-Command -VMGuid $DC.id -Credential $cred -ScriptBlock {param($path); Remove-Item $path} -ArgumentList $path
-            $unattendfile=CreateUnattendFileBlob -Blob $blob.Substring(0,$blob.Length-1) -AdminPassword $LabConfig.AdminPassword -RunSynchronous $RunSynchronous -TimeZone $TimeZone
-        }elseif($VMConfig.Unattend -eq "None"){
-            $unattendFile=$Null
-        }
-
-        #adding unattend to VHD
-        if ($unattendFile){
-            WriteInfo "`t Adding unattend to VHD"
-            Mount-WindowsImage -Path $mountdir -ImagePath $VHDPath -Index 1
-            Use-WindowsUnattend -Path $mountdir -UnattendPath $unattendFile
-            #&"$PSScriptRoot\Tools\dism\dism" /mount-image /imagefile:$vhdpath /index:1 /MountDir:$mountdir
-            #&"$PSScriptRoot\Tools\dism\dism" /image:$mountdir /Apply-Unattend:$unattendfile
-            New-item -type directory "$mountdir\Windows\Panther" -ErrorAction Ignore
-            Copy-Item $unattendfile "$mountdir\Windows\Panther\unattend.xml"
-        }
 
-        if ($VMConfig.DSCMode -eq 'Pull'){
-            WriteInfo "`t Adding metaconfig.mof to VHD"
-            Copy-Item "$PSScriptRoot\temp\dscconfig\$name.meta.mof" -Destination "$mountdir\Windows\system32\Configuration\metaconfig.mof"
-        }
+            #adding unattend to VHD
+            if ($unattendFile){
+                WriteInfo "`t Adding unattend to VHD"
+                Mount-WindowsImage -Path $mountdir -ImagePath $VHDPath -Index 1
+                Use-WindowsUnattend -Path $mountdir -UnattendPath $unattendFile
+                #&"$PSScriptRoot\Tools\dism\dism" /mount-image /imagefile:$vhdpath /index:1 /MountDir:$mountdir
+                #&"$PSScriptRoot\Tools\dism\dism" /image:$mountdir /Apply-Unattend:$unattendfile
+                New-item -type directory "$mountdir\Windows\Panther" -ErrorAction Ignore
+                Copy-Item $unattendfile "$mountdir\Windows\Panther\unattend.xml"
+            }
 
-        if ($unattendFile){
-            Dismount-WindowsImage -Path $mountdir -Save
-            #&"$PSScriptRoot\Tools\dism\dism" /Unmount-Image /MountDir:$mountdir /Commit
+            if ($VMConfig.DSCMode -eq 'Pull'){
+                WriteInfo "`t Adding metaconfig.mof to VHD"
+                Copy-Item "$PSScriptRoot\temp\dscconfig\$name.meta.mof" -Destination "$mountdir\Windows\system32\Configuration\metaconfig.mof"
+            }
+
+            if ($unattendFile){
+                Dismount-WindowsImage -Path $mountdir -Save
+                #&"$PSScriptRoot\Tools\dism\dism" /Unmount-Image /MountDir:$mountdir /Commit
+            }
         }
 
         #add toolsdisk
@@ -823,6 +864,15 @@ If (-not $isAdmin) {
             $VMTemp | Add-VMHardDiskDrive -Path $vhd.Path
         }
 
+        #add ISO
+        if ($VMConfig.AttachISO){
+            if (-not ($VMTemp | Get-VMDvdDrive)){
+                WriteInfoHighlighted "`t Adding ISO $($VMConfig.AttachISO)"
+                $DVD=$VMTemp | Add-VMDvdDrive -Path "$PSScriptRoot\ParentDisks\$($VMConfig.AttachISO)" -Passthru
+                $VMTemp | Set-VMFirmware -FirstBootDevice $DVD
+            }
+        }
+
         # return info
         [PSCustomObject]@{
             OSDiskPath = $vhdpath
@@ -1668,9 +1718,8 @@ If (-not $isAdmin) {
                         'vm.configuration' = $VMConfig.Configuration
                         'vm.unattend' = $VMConfig.Unattend
                     }
-                    if((Test-Path -Path $createdVm.OSDiskPath) -and $VMConfig.configuration -ne "Linux") {
+                    if((Test-Path -Path $createdVm.OSDiskPath) -and ($VMConfig.configuration -ne "Linux") -and ($VMConfig.ParentVHD)) {
                         $osInfo = Get-WindowsImage -ImagePath $createdVm.OSDiskPath -Index 1
-
                         $properties.'vm.os.installationType' = $osInfo.InstallationType
                         $properties.'vm.os.editionId' = $osInfo.EditionId
                         $properties.'vm.os.version' = $osInfo.Version
diff --git a/Scripts/LabConfig.ps1 b/Scripts/LabConfig.ps1
index 257be45b..a026d3e2 100644
--- a/Scripts/LabConfig.ps1
+++ b/Scripts/LabConfig.ps1
@@ -236,7 +236,7 @@ $LabConfig=@{AllowedVLANs="1-10,711-719" ; DomainAdminName='LabAdmin'; AdminPass
     VMSet (Mandatory for Shared and Replica configuration)
         This is unique name for your set of VMs. You need to specify it for Spaces and Replica scenario, so script will connect shared disks to the same VMSet.
 
-    ParentVHD (Mandatory)
+    ParentVHD (Optional. If Null, new VHDx will be created)
         'Win2016Core_G2.vhdx'     - Windows Server 2016 Core
         'Win2016NanoHV_G2.vhdx'    - Windows Server 2016 Nano with these packages: DSC, Failover Cluster, Guest, Storage, SCVMM
         'Win2016NanoHV_G2.vhdx'   - Windows Server 2016 Nano with these packages: DSC, Failover Cluster, Guest, Storage, SCVMM, Compute, SCVMM Compute
@@ -346,6 +346,17 @@ $LabConfig=@{AllowedVLANs="1-10,711-719" ; DomainAdminName='LabAdmin'; AdminPass
         Example VMVersion="10.0"
         default versions - Windows Server 2022 = 10.0, Widnows Server 2025 = 12.0
         https://learn.microsoft.com/en-us/windows-server/virtualization/hyper-v/deploy/Upgrade-virtual-machine-version-in-Hyper-V-on-Windows-or-Windows-Server
+    
+    #AttachISO (optional)
+        Example AttachISO="WindowsServer2025.iso"
+        it will mount iso specified from Parent Disks
+
+    #SecureBoot (optional)
+        Example Secureboot="Linux"
+        enables/disables secure boot for VM
+        possible values: windows,linux,disabled
+        Default: windows for windows machines, disabled for linux VMs
+        
     #>
 #endregion