Thanks for reply - have tried different adapters, diff micro sd's and two players - same problem.
I should have said "empty folder" in last email.
I just don't get it. Latest thing is I transferred some flacs in a folder and 3 or 4 were missing but they show up in playlist and database.
This never happened on a hard drive. I was so thrilled to discover Rockbox I thought it would be good to take advantage of ssd. and longer batt life.
I have found if you drag across multiple folders transfer time is registered as hours and they do not all transfer but doing the transfer individually is about 90seconds per title. The origin of the files makes no difference - mp3, flac... can happen with anything
So I'm not confusing or overloading the ssd / machine....its just some will not transfer. Even when you watch them appear on pc monitor they are not there after process closes!!
This is only a small % but its very weird.
Appreciate your reply and welcome more ideas
Thanks and happy hols
Stuart