I continue to have the same issue, but with a single card. I have an external card reader that I can plug into one of 12 usb ports on my system. I also have a music player that holds this card, which has a USB interface on it.
With the card reader, or with the music player, plugged into the computer, the card shows up with the same name in the operating system "MUSICARD1". I gave it that name and I can edit it.
But I can't seem to figure out how to make MC recognize it more than once. I just tried 5 different USB ports *and* the music player with the card. In all cases, the OS sees it as the same volume and mounts it in the same location. But MC doesn't see it at all.
Essentially, every time I want to re-sync this card, I have to define it again.
I've checked the User Settings.ini file and I seem to have an entry that corresponds to this card. But it doesn't show a device path. It's all rather confusing as I have no idea what MC is using to key on. I.E., how does MC identify a mounted device?
Doesn't it make the most sense to ID the card based on the volume name and path? That would seem to be a good approach to me, but I haven't had a ton of experience with this; perhaps there's a good reason MC does it differently.
What I am sure about is that the current system really doesn't work on Mac for me. If I'm doing something wrong, I'd be happy to change and do it the right way. Any suggestions?
Brian.