The AVCHD folder/files were copied from the camera hard drive to both an internal and external drive. I’ve tried reading from both drives and writing to both drives. The scratch drive has 1.3TB, but I’ll check to make sure I had the external drive (eSATA) set. I’m not at the house currently and I’m not sure which codec. However the codec has not changed since the successful run and the errored run.. I would love to learn how all the above effect the transfer.. thanks Jeremy!!