Certain types of backup software do not load the media label when computer tapes are changed after starting up the system.Please check your software instruction manual. In this case, the software cannot read the media data because the data is damaged.Reformat the computer tape or use a new computer tape to write the media label. If the trouble continues to occur, back up a small amount of data to a computer tape and confirm whether the data can be backed up.If you continue to have problems, please contact our customer service center.