HP Netserver E Server series - Manual (Page 13)

Chapter 1 Installation Overview
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4. Insert the Navigator CD-ROM into the CD-ROM drive now, turn off
power to the NetServer, wait 10 seconds, and turn it back on. The
NetServer will boot from the Navigator CD-ROM.
If the NetServer fails to boot, follow the directions displayed on the
screen.
5. Go to the Navigator Main Menu and select "Configuration Assistant."
Follow the instructions in Configuration Assistant to continue your NetServer
installation.