Is it possible to eject a cd in a batch file on Windows XP?

Question

I've seen a few executables/utilities that do it, and many forums that say it is not possible to do. But is there any DOS command that I can rely on in a typical XP installation?

Answer 1

There seems to be no way using rundll or a preexisting executable.

If you have windows scripting host installed, maybe the following helps (untested, copied from another forum)

Set oWMP = CreateObject("WMPlayer.OCX.7")
Set colCDROMs = oWMP.cdromCollection
colCDROMs.Item(0).Eject

Change the (0) if you have more than one drive.

Answer 2

I can do better than that... Paste this into a batch file called "eject.bat":

for /F "usebackq tokens=6" %%i in (`vol %1:`) do if "" neq "%%i" rsm eject /pf%%i

You can pass any drive letter to this batch file, so you can eject any drive. You can even eject devices like iPods and USB drives.

Answer 3

There is a windows API call to do it, but unfortunately not a built in command.

There is a command line tool you can download though that will do the job.

Answer 4

Executables do it using the mciSendCommand API. I don't think it can be done though batch as of yet.