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Browse Prior Art Database

Initial Machine Load Process for Personal Computer Network Systems

IP.com Disclosure Number: IPCOM000106102D
Original Publication Date: 1993-Sep-01
Included in the Prior Art Database: 2005-Mar-20
Document File: 2 page(s) / 86K

Publishing Venue

IBM

Related People

Grimes, BR: AUTHOR [+2]

Abstract

Described is a software implementation to improve the performance of personal computer (PC) systems that are media- less initial machine load (IML) machines, where IML image updates are loaded over a network during operating system initialization.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 52% of the total text.

Initial Machine Load Process for Personal Computer Network Systems

      Described is a software implementation to improve the
performance of personal computer (PC) systems that are media- less
initial machine load (IML) machines, where IML image updates are
loaded over a network during operating system initialization.

      Generally, when normal IML systems store the IML image on a
local media, updating requires overwriting the current image with the
updated image.  However, since media-less systems do not have a local
media, IML updates must be controlled differently.

      In prior art, the updating of the IML code on a media-less
system entailed the use of a device driver which was executed during
system initialization so as to query the remote initial program load
(IPL) server for an updated IML image.  If one existed, the
determination would be made if it needs to be applied to the
media-less system.  If required, the update would be performed and
the system would be re-booted.  The re-booting was required because
the basic system services code had been overwritten.  The reboot
reinitialization of the system code, also known as a warm start, was
required to keep the new system code intact during the boot process.

      The re-booting process required the operating system to begin
initialization again since it was part of the boot process which
required the device driver to load and execute again.  The remote IPL
server would be again queried for an updated image, but none would be
found since it was not needed for a media-less system.  The process
was a result of just loading the updated IML image on the previous
boot.  As a result, a redundant check of the remote IPL server took
place on all subsequent warm starts until the system was powered off.
This redundant operation caused a reduction in system performance.

      The concept described herein improves system performance by
eliminating the redundant checking procedure during IML image
updating on remote IPL servers.  All future warm-starts no longer
query the remote IPL...