IBM Novell 10 SP1 EAL4 - Manual (Page 175)

5.10.4 System p in LPAR
SLES runs in a logical partition on an System p system. The hypervisor program creates logical partitions,
which interacts with actual hardware and provides virtual versions of hardware to operating systems running
in different logical partitions. As part of an Initial Program Load, the hypervisor performs certain
initializations, listed below, before handing control over to the operating system.
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Figure 5-80: System p SLES boot sequence