Browse Prior Art Database

Push two buttons simultaneously for changing boot ways

IP.com Disclosure Number: IPCOM000014198D
Original Publication Date: 2001-Oct-18
Included in the Prior Art Database: 2003-Jun-19
Document File: 1 page(s) / 27K

Publishing Venue

IBM

Abstract

Disclosed is a method to change boot devices with pushing two or more buttons simultaneously in the system like personal computer.

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Push two buttons simultaneously for changing boot ways

   Disclosed is a method to change boot devices with pushing two or
more buttons simultaneously in the system like personal computer.

In normal case, the boot device is easily to be changed by
everyone, but by this method, only the authorized person can do
it. This method can also detect button stuck failure. And it is
helpful for the server-like system and the system which doesn't
have usual user interface: display monitor, keyboard, or mouse,
etc. to use this method.

·Our method to change boot devices is as follows;
1. In boot sequence, the system BIOS checks whether the
particular set of buttons are pushed or not.
2. If the BIOS recognizes that the particular buttons are pushed,
then it requires to release the buttons to the user.
3. If the BIOS detects that the buttons are released, then the
system will boot from another boot device.
4. In case the buttons are not released, then the system
recognizes that the buttons are failed by stuck or something
wrong.

  In addition, to protect from miss operation, this method also
include following design;
1. In normal boot sequence, button operation is not required.
2. The time period when the BIOS checks the particular set of
buttons is restricted within predefined value.

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