I want to remove all traces of a filename from the FAT. When I delete it regularly the file's first letter is just replaced with a '?'. I want to be sure no trace is left. Right now I write like 50,000 files and delete them to overwrite the filename. This is ok but I'd like to be able to do it faster. If you know what the minimum number of files I have to write to do it under FAT16, FAT32 and NTFS, that would help also.