# Set CD/DVD Drive to A:
$cd = $NULL
$cd = Get-WMIObject -Class Win32_CDROMDrive -ComputerName $env:COMPUTERNAME -ErrorAction Stop
if ($cd.Drive -eq "D:")
{
Write-Output "Changing CD Drive letter from D: to A:"
Set-WmiInstance -InputObject ( Get-WmiObject -Class Win32_volume -Filter "DriveLetter = 'd:'" ) -Arguments @{DriveLetter='a:'}
}
# Set CD/DVD Drive to A:
Get-WmiObject -Class Win32_volume -Filter 'DriveType=5' |
Select-Object -First 1 |
Set-WmiInstance -Arguments @{DriveLetter='A:'}
All information on this site is shared with the intention to help. Before any source code or program is ran on a production (non-development) system it is suggested you test it and fully understand what it is doing not just what it appears it is doing. I accept no responsibility for any damage you may do with this code.