snippet

if (-not ($test-path "C:\Setup\GitDrive.txt")){ 
  $drives = get-psdrive -psprovider filesystem | foreach-object -process { $_.Name + ":"} # find available drives, including empty DVD drives.
  $changeddrive = (ls function:[d-z]: -n | ?{!($drives -contains $_)}| select -First 1)[0] # Get letter of first available drive letter
  $devPath = "$changeddrive:\Development"

  $newsize = (Get-WmiObject Win32_logicaldisk | ForEach-Object -Process { $_.Size })[0]
  $newsize = $newsize - 10*1gb
  Resize-Partition -DiskNumber 0 -DriveLetter C -size $newsize
  New-Partition -DiskNumber 0 -DriveLetter $changeddrive -UseMaximumSize
  format-volume -driveletter $changeddrive -Confirm:$false
  
  $devPath > "C:\Setup\GitDrive.txt"
} else { 
  $devPath = (Get-Content "C:\Setup\GitDrive.txt")[0]
}