R0106-HP MSR Router Series Fundamentals Configuration Guide(V7)

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The system always attempts to start up with the main images. If any main image does not exist or is
invalid, the system tries the backup images. Figure 46 show
s the entire Comware image loading
procedure.
In this procedure, both the main and backup image sets have feature and patch images. If an image set
has neither feature images nor 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 do not exist or are 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."
Figure 46 Comware image loading procedure
System startup process
Upon power-on, the Boot ROM image runs to initialize hardware, and then the startup software images
run to start up the entire system, as shown in Figure 47. To access the Boot ROM menus, press Ctr
l+B
within 4 seconds at the prompt during the startup process.