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# File name: Set-EFIFirmware.ps1
#
# Description: This script checks and sets the firmware type to EFI for a particular VM
#
# 26/07/2018 - Version 1.0
# - Initial Release
#
# Author: Roman Dronov (c)
# Clear the screen
Clear-Host
# Set the function
function Set-Firmware {
[CmdletBinding()]
Param
(
[Parameter(Mandatory=$true, Position=0)]
[string]$Argument
)
$choice = Read-Host "`n Would you like to set the firmware type to EFI? (Yes/No)"
while ("Yes","No" -notcontains $choice){
$choice = Read-Host "`n Would you like to set the firmware type to EFI? (Yes/No)"
}
switch ($choice){
"Yes" {
Write-Host " Checking the VM power state..." -NoNewline
if ($vm.PowerState -eq 'PoweredOff'){
Write-Host " The VM is powered off." -ForegroundColor Green
Write-Host " Setting the firmware type..." -NoNewline
if ($Argument -eq '0'){
Get-VM -Name $vmName | New-AdvancedSetting -Name 'firmware' -Value 'efi' -Confirm:$false | Out-Null
}
elseif ($Argument -eq '1'){
Get-VM -Name $vmName | Get-AdvancedSetting -Name 'firmware' | Set-AdvancedSetting -Value 'efi' -Confirm:$false | Out-Null
}
Write-Host " Completed successfully!" -ForegroundColor Green
}
else {
Write-Host " $vm is powered on!" -ForegroundColor Red
Write-Host " Please shutdown the VM and run this script again." -ForegroundColor Yellow
}
Write-Host "`n Exiting..."
}
"No" {
Write-Host " Cancelled by the user." -ForegroundColor Yellow
Write-Host "`n Exiting..."
}
}
}
# Promp for the VM name
$vmName = $null
while ($vmName -eq $null){
$vmName = Read-Host -Prompt "`n Input the VM name"
if ($vmName -eq '' -or -not (Get-VM -Name $vmName -ErrorAction SilentlyContinue)){
Write-Host " Invalid VM name, please re-enter." -ForegroundColor Yellow
$vmName = $null
}
}
# Check the firmware advanced setting
$vmName = $vmName.ToUpper()
$vm = Get-VM -Name $vmName
$vmFirmware = Get-AdvancedSetting -Entity $vm -Name 'firmware'
Write-Host "`n Checking the firmware advanced setting for $vmName..."
if (-not $vmFirmware){
Write-Host " Parameter not exist." -ForegroundColor Yellow
# Set the firmware advanced setting to EFI
Set-Firmware -Argument 0
}
elseif ($vmFirmware.Value -ieq 'efi'){
Write-Host " $vmName has the firmware type set to EFI already." -ForegroundColor Green
Write-Host "`n Exiting..."
}
else {
$vmFirmwareValue = $vmFirmware.Value
$vmFirmwareValue = $vmFirmwareValue.ToUpper()
Write-Host " $vmName has the firmware type set to $vmFirmwareValue." -ForegroundColor Yellow
# Set the firmware advanced setting to EFI
Set-Firmware -Argument 1
}
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