2.2. Boot process
During the boot process, the system tests the hardware, loads and runs the operating system, and configures devices. To boot the operating system, the following resources are required:
A boot image that can be loaded after the machine is turned on or reset.
Access to the root and /usr file systems.
There are three types of system boots:
Hard Disk Boot
A machine is started for normal operations with the key in the normal position. On PCI-based systems with no key locking, this is the default startup mode.
Diskless Network Boot
A diskless or dataless workstation is started remotely over a network. A machine is started for normal operations with the key in the normal position. One or more remote file servers provide the files and ...
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