Scott, I'm not sure if you're going to get this, but I have an urgent question for you regarding error code 43. I've researched online, called Apple, etc. I've gotten no answers thus far. So I guess I'll ask here, and just hope that you specifically get this!
I put a bunch of VERY important video files on an external HD that I had/have plugged into my older Mac Pro. But before I did, I believe I recall having to get Mac drivers for it. Anyways, my internal HD crashed, and when I got a new one, I noticed that all the videos on my external, titled with a /, now won't play, show as an alias file with zero kb, and produce an error code 43. The external drive, under format, also says Windows NT File System, and I'm not sure if it said that before, or just automatically went back to it's native format after my internal drive crashed. I also can't bring new files into it, but I can pull files OUT of it, a side from the ones that are "illegally titled". However, these illegally titled videos were never a problem before, but became one once I got the new internal, and installed an older OS (Snow Leopard). I believe I had Mountain Lion prior, could that be the problem?
Last thing... Just for a test, I removed a legally titled video from my external, onto the desktop, titled it illegally, and it works fine! Are these legal/illegal characters a Windows thing, since it seems to have worked when I had Mac drivers for the external? Is there any way, outside of data recovery, that I can get these videos back? This project has almost been 20 years in the making, literally. It would be a tragedy to have these lost!
Thank you!