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if ( (Get-PSSnapin -Name Microsoft.SharePoint.PowerShell -ErrorAction SilentlyContinue) -eq $null )
{
Add-PSSnapin Microsoft.SharePoint.PowerShell
}
[System.Reflection.Assembly]::LoadWithPartialName("Microsoft.SharePoint.Client.Search.Administration.SearchObjectLevel") 
[System.Reflection.Assembly]::LoadWithPartialName("Microsoft.Office.Server.Search.Administration.CrawlLog") 

# text that we are looking for
$matchText = "SharePoint"

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Enable-WindowsOptionalFeature -Online -FeatureName Microsoft-Hyper-V-Management-PowerShell

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###
# Danny Davis
# Create VM in Hyper-V
# Created: 04/23/19
# Modified: 06/12/19
###

$environmentName = "Example" # CustomerName
$type = "S" # Client (C) or Server (S)
$OS = "16" # Windows Server 16 (16), Win Server 19 (19), Win10 (10)

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# Waits till VM is running
do{
    $RunningVM = Get-VM -ComputerName $VMHost -Name $VMName
    $state = $RunningVM.State
}while($state -ne "Running")

# Break to get OS Version to ensure that Windows is up
do{
    try{
        Get-WMIObject -Class Win32_OperatingSystem -ComputerName $VMName -Credential $VMCredentials | Select-Object *Version -ExpandProperty Version*

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# Start Hyper-V VM
Start-VM –ComputerName $VMHost –Name $VMName

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# Add second VHD
try
{
    New-VHD -Path $VHDPath -SizeBytes $VHDSize
}
catch{ "An error occured during the creation of the second VHD in Path "+$VHDPath}

try
{
    Add-VMHardDiskDrive -VMName $VMName -ControllerType SCSI -Path $VHDPath

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# Create new VM and basic VHD
try
{
    # "Copy" HDD of the Parent OS
    New-VHD -Path $VHDPathOS -ParentPath $ParentVHDOS #-Differencing 
}
catch{ "An error occured during the creation of of VHD OS in Path "+$VHDPathOS }

try
{

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switch($VMSize) 
{
    "S1" 
    {
        $MemoryStartupBytes = 1GB
        $VHDSize = 10GB
        $ProcCount = 1
        $MemoryMinimumBytes = 512MB
        $MemoryMaximumBytes = 1GB
        $Generation = "2"

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# Build VM Credentials
$username = ""
$pw = ""
$secpassword = ConvertTo-SecureString $pw -AsPlainText -Force
$VMCredentials= New-Object System.Management.Automation.PSCredential ($username, $secpassword)

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Start-Process -FilePath C:\Windows\System32\Sysprep\Sysprep.exe -ArgumentList '/generalize /oobe /shutdown /quiet'