Elevating PowerShell script permissions - powershell

Question

I am trying to run script to manage some VHD Disks, but the disk mount is failing due to elevated permissions required. The user the script is run under is a local admin, but UAC is blocking it I think. The error which comes back is: “DiskState=Failed to mount disk - "Access to a CIM resource was not available to the client”
Ideally I need to the script to run under elevated command prompt automatically. Any idea's how I can achieve that programmatically?
The script I am running is this:
$location = "C:\temp"
$name = "downloadfile"
$Author = "FSLogix"
$FilePath = "Filepath here"
$LogFilePath = "Logfilepath here"
# Force to create a zip file
$ZipFile = "$location\$Name.zip"
New-Item $ZipFile -ItemType File -Force
$RepositoryZipUrl = "https://github.com/FSLogix/Invoke-FslShrinkDisk/archive/master.zip"
# download the zip
Write-Host 'Starting downloading the GitHub Repository'
Invoke-RestMethod -Uri $RepositoryZipUrl -OutFile $ZipFile
Write-Host 'Download finished'
#Extract Zip File
Write-Host 'Starting unzipping the GitHub Repository locally'
Expand-Archive -Path $ZipFile -DestinationPath $location -Force
Write-Host 'Unzip finished'
# remove the zip file
Remove-Item -Path $ZipFile -Force
# Run the FSLogix Optimisation
C:\temp\Invoke-FslShrinkDisk-master\Invoke-FslShrinkDisk.ps1 -Path $FilePath -Recurse -PassThru -LogFilePath $LogFilePath\logfile.csv

Answer 1

You can elevate the PS script using the Powershell as a separate process and make it "run as admin" like below:
start-process PowerShell -verb runas
OR
Powershell -Command "Start-Process PowerShell -Verb RunAs"
Apart from that , you can condition it as well. There is a beautiful conditional code shared by PGK which can help as well:
if (-NOT ([Security.Principal.WindowsPrincipal][Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole] "Administrator"))
{
$arguments = "& '" +$myinvocation.mycommand.definition + "'"
Start-Process powershell -Verb runAs -ArgumentList $arguments
Break
}