Dell PowerEdge M905 Guide De Mise En Route page 16

Turn on the Blades
Press the power button on each blade, or power on the blades using
the systems management software.
Complete the 0perating System Setup
If you purchased a preinstalled operating system, see the operating system
documentation that ships with your system. To install an operating system for
the first time, see the Quick Installation Guide. Be sure the operating system
is installed before installing hardware or software not purchased with the
system.
14
Getting Started With Your System