Managing disk space
If you are running low on disk space, you can remove old backupsusing the Manage Backup Disk Space tool. 
To manage disk space:
1	Click Tools > Manage Backup Disk Space. A dialog window opens.
2	Use the drop-down menus to choose a location and volume of where your backups or saved system states are stored.
3	Use the Available backups drop-down menu to select the specific backupto remove. 
4	Click Delete.