Re: Optical drives through IOKit

Subject: Re: Optical drives through IOKit

From: "Herb Petschauer" <email@hidden>

Date: Thu, 10 May 2007 18:28:04 -0700

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On 10/05/07, Steve Joynt <email@hidden> wrote:

Hi,

First off, sorry if this is the wrong list, I couldn't see an IOKit list and this looked like the closest match.

I'm wanting to know how to access optical drives and manipulate things like the tray state. I can get a list of drives from the registry, and have worked out how to listen for tray open/close events. I can also use the MMCDeviceInterface to open and close the tray, but this is only available for authoring-capable drives ( i.e. CD/DVD burners). Is there anything that can manipulate the tray state for non-burning CD/DVD ROM drives? It seems to me to be a fairly basic thing to do, but I can't find how to do it. NSWorkspace has a method to unmount and eject a volume, but that doesn't help if there's no disc in the drive. I have looked at the DiscRecording framework which has a very simple interface, but also only supports authoring-capable drives.

Thanks,
Steve

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References:

>Optical drives through IOKit (From: "Steve Joynt" <email@hidden>)