HP Onboard Administrator - Manual (Page 148)

Configuring the HP BladeSystem c7000 enclosure and enclosure devices 148
From the Connect: Blade DVD screen, select Connect and Reboot.
All blades reboot with the DVD/CD-ROM drive connected. If the media in the DVD/CD-ROM drive is
bootable, the blades boot from this media. If a partition exists, the server might attempt to boot from the local
hard drive. If the blades are older or have been erased, then delete and re-create all local drive partitions.