One bit of advice. Set the file size to something low.
I keep mine set at 512K.
Better to have to join more files together, than to loose an entire set because of a battery issue.
The DR2D will save the file if the internal battery dies so no need to follow this advice. It is only if you have an external source interrupted and have no internal power that you will lose a file.
Actually, that is exactly what happened to me on my second trip out with the DR2D.
Batteries died during recording and lost the entire file.
It was a small festival, and I had already recorded 5 groups, so I swapped out my batteries for what were supposed to be fresh ones before the next group.
I started the recorder just before the group hit the stage. Looked in my pocket about 40 minutes in, and it was still going.
At the end of the set (just under an hour) when I checked, it was off.
Thought maybe something got bumped in the crowd. So I started it up again for the next group, but kept an eye on it this time.
Died within a couple minutes, so I hurriedly switched back to my first set of batteries again and it ran fine for the rest of the show.
When I got home, and checked the recordings.
Yeah, it had saved files both times it died. But the files were only 1k and were unreadable.
Even tried a program I was advised to try from someone here (fixwave). That could recover nothing from the files either.
After that, I changed my file size setting from 2gb to 512k
Haven't had any batteries die on me since then, but I'm still not taking the chance.
Since I get about 30 minutes in every 512k file, I could have at least had half that set I lost if I would have changed the settings originally.