boot(1M)                                                           boot(1M)




 NAME    [Toc]    [Back]
      boot - bootstrap process

 DESCRIPTION    [Toc]    [Back]
    Itanium-based System Hardware
      The Itanium-based system's bootstrap process involves the execution of
      four software components:

           +  CMOS

           +  option ROM

           +  EFI

           +  Boot Manager

           +  hpux.efi

      After the processor is reset, firmware initializes and tests
      processors and platform.  During initialization, the firmware lets a
      user interrupt and configure CMOS and option ROMs.  It then transfers
      control to EFI, the Extensible Firmware Interface.  EFI, in turn,
      initializes EFI boot and runtime services and launches the Boot
      Manager.  The Boot Manager, which allows loading of EFI application or
      drivers from EFI defined file system, loads and transfers control to
      hpux.efi, the HP-UX-specific bootstrap loader.  hpux.efi then loads
      the HP-UX kernel object file from the HP-UX file system to memory and
      transfers control to the loaded kernel image.

    PA-RISC Hardware    [Toc]    [Back]
      The Series 700 and 800 bootstrap process involves the execution of
      three software components:

           +  pdc (see pdc(1M),

           +  isl (see isl(1M), and

           +  hpux.

      After the processor is RESET, pdc, the processor-dependent code
      (firmware), performs a self-test and initializes the processor.  It
      then loads and transfers control to isl, the operating-systemindependent
 initial system loader.  isl, in turn, loads and transfers
      control to the hpux utility, the HP-UX-specific bootstrap loader.
      hpux then downloads the HP-UX kernel object file from an HP-UX file
      system and transfers control to the loaded kernel image.

 SEE ALSO    [Toc]    [Back]
      efi(4), hpux(1M), isl(1M), pdc(1M).


 Hewlett-Packard Company            - 1 -   HP-UX 11i Version 2: August 2003