Installation ManualH3C SecPath F1000-E Firewall Chapter 6 Maintaining Software6-2z Main application file. The default name is main.bin, and the file type is M. It is thedefault application file used for booting.z Backup application file. The default name is backup.bin, and the file type is B.When the boot using the main application file fails, the system boots using thebackup application file.z Secure application file. The default name is secure.bin, and the file type is S.When the boot using the main and backup application files fails, the system bootsusing the secure application file. If the boot using the secure application file fails,the system prompts a boot failure.Note that:z The application files for system boot can be type M, B and S, but not type N (that is,types other than M, B, and S).z You can modify the name of an application file using commands after theapplication boots. You can modify the type of application files of type M, B and Nexcept for type S on the BootWare menu or using commands after the applicationboots.z The secure application file is the last resort for system boot. You cannot changethe type of the secure application file, or change other types of files to the secureapplication file. You can only download it using the BootWare menu.z There is only one file of the same type (M, B, or S) on the CF card. For instance, ifthere is a file of type M+B on the CF card, there will not be other files of type M orB. If the type of another file is changed to B, the original type M+B file changes to afile of type M.6.1.4 Configuration FilesThe configuration files store configuration information of the firewall. These files aredisplayed when you view the BootWare information, but without file attributes. Thedefault file attribute is N/A.By default, the system defines three configuration files for booting:z Main configuration filez Backup configuration filez Default configuration fileThe three kinds of configuration files are stored on the CF card with the extension .cfg.If you have loaded the three configuration files into the CF card, the system will bootusing these three files in order. For more information about configuration files, refer to6.6 "Maintaining Application and Configuration Files” on page 6-30.The following gives the types of the configuration files and their priorities for booting:z Main configuration file. The file type is M. The system boots using the mainconfiguration file by default.