How can I eject a CD via the cmd?

You can eject a cd with a batch file (this is part vbscript

@echo off
echo Set oWMP = CreateObject("WMPlayer.OCX.7")  >> %temp%\temp.vbs
echo Set colCDROMs = oWMP.cdromCollection       >> %temp%\temp.vbs
echo For i = 0 to colCDROMs.Count-1             >> %temp%\temp.vbs
echo colCDROMs.Item(i).Eject                    >> %temp%\temp.vbs
echo next                                       >> %temp%\temp.vbs
echo oWMP.close                                 >> %temp%\temp.vbs
%temp%\temp.vbs
timeout /t 1
del %temp%\temp.vbs

This is not my work, I found it in the stackoverflow community:

Post Link: Batch Command Line to Eject CD Tray?
Answer Author: Bruno
Date Answered: Feb 10, 2015

You could use the Shell.Application COM object's InvokeVerb method. From a cmd prompt, you can abuse a PowerShell one-liner thusly:

powershell "(new-object -COM Shell.Application).NameSpace(17).ParseName('D:').InvokeVerb('Eject')"

You can also use Windows Scripting Host (VBScript / JScript) to invoke the COM object. Here's an example using a hybrid Batch + Jscript script (save it with a .bat extension):

@if (@CodeSection == @Batch) @then

@echo off
setlocal

set "CDdrive=D:"

cscript /nologo /e:JScript "%~f0" "%CDdrive%"

goto :EOF

@end // end batch / begin JScript hybrid chimera
var oSH = WSH.CreateObject('Shell.Application');
oSH.NameSpace(17).ParseName(WSH.Arguments(0)).InvokeVerb('Eject');

If you prefer to have your script detect the drive letter for the CD drive, that can be arranged as well. Here's a more complete version with comments explaining some of the non-self-explanatory values.

@if (@CodeSection == @Batch) @then

@echo off
setlocal

cscript /nologo /e:JScript "%~f0"

goto :EOF

@end // end batch / begin JScript hybrid chimera

// DriveType=4 means CD drive for a WScript FSO object.
// See http://msdn.microsoft.com/en-us/library/ys4ctaz0%28v=vs.84%29.aspx

// NameSpace(17) = ssfDRIVES, or My Computer.
// See http://msdn.microsoft.com/en-us/library/windows/desktop/bb774096%28v=vs.85%29.aspx

var oSH = new ActiveXObject('Shell.Application'),
    FSO = new ActiveXObject('Scripting.FileSystemObject'),
    CDdriveType = 4,
    ssfDRIVES = 17,
    drives = new Enumerator(FSO.Drives);

while (!drives.atEnd()) {
    var x = drives.item();
    if (x.DriveType == CDdriveType) {
        oSH.NameSpace(ssfDRIVES).ParseName(x.DriveLetter + ':').InvokeVerb('Eject');
        while (x.IsReady)
            WSH.Sleep(50);
    }
    drives.moveNext();
}

Command line CD-eject oneliner:

In a bat file or directly in cmd this worked after first run of wmplayer on Windows 8:

powershell (New-Object -com "WMPlayer.OCX.7").cdromcollection.item(0).eject()

How can I eject a CD via the cmd?

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