Browse Prior Art Database

Automatic Initial Program Load Selection

IP.com Disclosure Number: IPCOM000117483D
Original Publication Date: 1996-Mar-01
Included in the Prior Art Database: 2005-Mar-31
Document File: 2 page(s) / 30K

Publishing Venue

IBM

Related People

Cowlard, J: AUTHOR

Abstract

Disclosed is an automatic Initial Program Load (IPL) selection utility provided in the system ROM of a computer system.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 100% of the total text.

Automatic Initial Program Load Selection

      Disclosed is an automatic Initial Program Load (IPL) selection
utility provided in the system ROM of a computer system.

      The automatic IPL selection (or boot manager) utility
is designed to run at the end of the computer system's normal
Power-On-Self-Test (POST) code in place of the normal boot code.  The
utility operates to examine the various bootable devices within the
computer system and to automatically create a table of these bootable
options.  The boot code is then presented with all partition boot
records to identify those bootable operating systems which are
present in the system.  The user of the computer system is presented
with a list of available boot options including the identity of the
operating systems installed on those bootable partitions.  The user
then selects the required option.  Optionally, configuration data
about the boot options can be stored in non-volatile memory to set up
a preferred boot from a hardfile partition and/or to take the
previous boot by default.

      By means of such a ROM resident boot manager, a table of
bootable operating systems is automatically created on every boot of
the computer system.  The user of the computer system is thus able to
select the required option.