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Media Appears Erased..

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Good Day All,

I apologize in advance if this topic has been covered, I did a cursory search and did not immediately locate useful information.


My problem is this:

I am backing up using Retrospect 6.1.138 on a G5 running OSX 10.5.1.

Months ago the Retrospect kind started acting up and I stopped trying to deal with it being busy.

I am revisiting my old partner (Retrospect) and I am having a bit of trouble getting the software to recognize media it has written.

If I do an immediate backup of ,say my "desktop" to a new backup set on DVD+R everything seems to go quite fine.

I can restore that information immediately, as long as I do nothing like eject the disk or restart Retrospect.

If I eject the disk and reload it Retrospect see's it as Erased. If I quit Retrospect and restart Retrospect it sees the media as Erased.


Any thoughts or suggestions would be greatly appreciated.

Thanks In advance


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Excellent questions:


Drive Model - Stock Apple Drive - Pioneer DVD-RW DVR-106D Version A606 _Retrospect Driver Pioneer DVD RW (5.12)


Media - Memorex DVD+R RW


Driver Update -

Retrospect version 6.1.138

launched at 2/12/2008 8:58 AM

Retrospect Driver Update, version


I am really hoping that the drive is not failing... it has been very serviceable for thee other tasks I do, burning CD's et al.

As far as bad media I would be hard pressed to believe all 25 DVD's I have tried are bad.


Best Regards

and Thanks


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You may want to try reverting back a few versions of RDU - there have been some issues with some of the recent RDUs, and your drive is not a recent one that would require a recent RDU. Try perhaps RDU or so. The RDU version history, with links to downloads, is here:



But it may be that the drive is beginning to go south. Retrospect has an odd algorithm, at least with tape, that declares the media to be "erased" if it sees an error when it tries to read the header at the beginning of the backup set member, so I suspect that this behavior might be similar with DVD.



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