data copier 2004 is most powerfull software for copying unreadble files from bad media for windows (tm). here are some key features of data copier 2004: powerfull file copying from all popular media (cd, diskette, dvd...). very fast byte copy process with 16 different speed buffers from 8 bytes to 4 mb. support changing unreadble byte-s with new byte which you can choose manually or from another file. reading and writing byte buffer from 4 mb downto 8 bytes. copying with test mode without writing to destination file.