Comware image redundancy and loading procedure

You can specify two lists of startup Comware software images: one main (primary) and one backup.

The boot and system images in a startup software image list must be the same version.

The system always attempts to start up with the main images. If any main images do not exist or are invalid, the system tries the backup images. Figure 27 shows the entire Comware image loading procedure.

In this procedure, both the main and backup image lists have feature and patch images. If an image list does not have either feature images or patch images, the system starts up with the main boot and system images after they pass verification.

If both the main and backup boot images are nonexistent or invalid, connect to the console port, and power cycle the device to load a boot image from the Boot ROM menu. For more information about downloading and loading a boot image, see the release notes for the software version.

After accessing the emergency shell, connect to the console port and load a system image so you can access the Comware system. For more information about using the emergency shell, see "Using the emergency shell."