I have an external WD "MyBook" 1TB drive that I was moving files to from my internal "C" drive and one of them just would NOT copy. It was a 5.1GB file. Someone informed me that it sounded like the External HD was formatted as a FAT or FAT32 disk and therefore could not handle files larger than 4GB. Turns out they were correct. WHY does WD ship these drives out as FAT32 instead of NTFS ? I assumed everything now-a-days was NTFS. In any event, I see there is a way to convert the HD from FAT32 to NTFS without having to reformat it and start over. Has any here done this? Any problem ? ANy tips or suggestions prior to my doing this ? And I also learned that my SanDisk 16GB Flash Memory Stick is a FAT32 as well. I see that the memory stick be "reformatted" to a NTFS too, so I may do it. Or... do you think I would be better off actually doing a total reformat instead of a convert ? Thanks for the help.