I was shooting a live event on a Sony PVW-X70 using internal SD cards. Near the end of the event my battery died. I hurriedly swapped batteries and finished the shoot. Upon checking thumbnails, I only saw the last 5 minutes which had been shot with the new battery. I've tried Disk Drill and Recoverit to attempt to recover the other hour and fifteen minutes of the event. Both find a partial MXF file, but I seem to have lost most of my shoot. Is there any reason to believe that the missing file is somewhere on the SD card, or did it fail to write to the card when the battery died? Is there something else I can try to recover the missing file?