Microsoft KB Archive/231814

= Removable Storage Manager May Not Eject Media for Some Devices =

Article ID: 231814

Article Last Modified on 2/26/2007

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APPLIES TO


 * Microsoft Windows 2000 Server
 * Microsoft Windows 2000 Advanced Server
 * Microsoft Windows 2000 Professional Edition
 * Microsoft Windows 2000 Datacenter Server

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This article was previously published under Q231814



SYMPTOMS
When you attempt to eject media using Removable Storage Manager (RSM), you may receive the following error message:

The resource required for this operation does not exist.



CAUSE
Most changer-type devices that are managed by RSM have either doors or ports that removable media are inserted into or ejected from. These doors or ports have electrical control interfaces that can be addressed programmatically to initiate receiving (injecting) or expelling (ejecting) media.

Some changer devices do not have these electrical control interfaces that RSM can use to issue an eject command. Normally, RSM maps an eject command to use the IEPORT interface. If that interface is not available, RSM remaps the command to use IEDOOR. If neither of these resources is present, you receive the error message.

ATAPI CD-ROM drives almost always lacks these electrical control resources, and generate the error message when you use the RSM Eject Wizard.

NOTE: The same error message is also displayed if you try to use the Inject command on these types of devices.

The RSM interface does not differentiate between devices that can and cannot support the IEPORT or IEDOOR interfaces. Therefore, RSM does not disable the Eject command on the menu.



RESOLUTION
To work around this behavior, use Windows Explorer (instead of RSM) for these types of CD-ROM changer devices. Right-click the device in Windows Explorer, and then click Eject. This method of ejecting bypasses RSM and simply issues an IOCTL command to the underlying device driver, asking it to eject the media.

NOTE: Use RSM to mount the media you want to eject (this puts the media into the drive). Then, dismount the same media to logically dismount it from RSM management. Finally, use Windows Explorer to eject the media.

Keywords: kbenv kbhardware kbprb KB231814

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