Well...I don't know how much specific info I can give you, since you are talking about a standalone Tascam mixer/recorder and problems with that particular SD card you are using with it....and I don't have either of those, or have dealt with them.
My point was...if you haven't been backing up the data on the SD...it's a bit late to worry about losing the data once the card starts having problems.
I know that's not really helpful with your card problem, but you have to assume that whatever digital device you are using, it WILL at some point have unrecoverable errors. So the backing up has to happen regularly from the git-go, and not something as a last minute prayer, if you can just get it to work one more time long enough to do a backup.
I'm working on some drum tracks right at this moment...I have an auto-backup set to every 5 minutes...and then I manually back up between work periods when I've done enough work that I would hate to lose and where I can't remember all the steps I used up to that point.
Then I do a full backup to a second device at the end of the daily session. From there, as the project gets more involved, so do the backups.
That is the only way to work...and then, when your SD throws out an error...you simply don't care, and you reformat and copy to it from your latest backup.
Sorry again if that's not what you want to hear...but if you end up losing everything on that SD, you will appreciate the need for backing up regularly as the real solution.
Have you tried on some of the Tascam forums, where maybe someone else has dealt with the same problem on the same device?
Also...if you put that card into some other device...like the laptop...can you see the data on it, or is it proprietary data to theDP008ex?
If I'm misunderstanding your problem and setup...please explain more.
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