Dantz has verified that there is a bug in the firmware of the Yamaha 6416
CD-RW drive. While we have notified Yamaha of this bug, until Yamaha
releases a fix for this problem, we can no longer officially support backup
to the Yamaha 6416 CD-RW drive with Retrospect or Retrospect Express.

The bug will cause the drive to intermittently return error 100 (illegal
command) when used with Retrospect on slower Macintosh and PC models. We
have some suggestions to try to work around this problem: use a faster
backup computer if there is one available, or try to increase the data rate
by disabling software compression and minimizing external activity during

Though you can make Retrospect recognize this drive by purchasing an upgrade
to Retrospect 4.2, you may see the error when backing up to this drive on
your Mac. The only computers I have not seen this error occur on are Power
Mac G3s and G4s, though even these fast machines are not guaranteed to work
correctly with the drive.

We apologize for the inconvenience this may cause you. You have been added
to our list of customers with this problem and will be notified when newer
firmware from Yamaha is available. We're hoping to receive a resolution to
this soon!


Matthew Tevenan
Technical Support Specialist
Dantz Development Corporation

> From: Moe Rubenzahl <[EMAIL PROTECTED]>
> Reply-To: "retro-talk" <[EMAIL PROTECTED]>
> Date: Sat, 12 Feb 2000 21:03:24 -0800
> To: retro-talk <[EMAIL PROTECTED]>
> Subject: Retrospect and Yamaha 6416S CD-RW drive
> Retrospect 4.0 won't back up to my new Yamaha 6416S CD-RW drive (1.0c
> firmware).  It does not even see the drive. I have:
> - checked for newer ROM software from Yamaha
> - gotten the latest (and last) driver update (14) from Dantz
> Dantz's support folks say no version of Retrospect works with this
> drive; but they are working on it.
> So my question is: Is it really this hopeless? Anyone have any
> workaround? I'll gladly update my Retrospect 4.0 if it will help.
> If not -- any other way to backup to this CD-RW other than backing up
> to a disk file and then using Toast to copy the file to CD?
> --
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