Apparatus and a method for allowing an operating system of a computer system to persist across a power off and on cycle
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United States of America Patent
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Jan 20, 1998
Grant Date -
N/A
app pub date -
Aug 4, 1995
filing date -
Aug 4, 1995
priority date (Note) -
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Abstract
A method of allowing an operating system of a computer system to persist across a power off and on cycle is described. The method includes the step of detecting if the computer system is to be powered off. If the computer system is detected to be powered off, the state of the computer system is then preserved by storing data representing the state of the computer system in a designated area of a nonvolatile memory of the computer system. A system initialization code of the operating system is then replaced with new system initialization code that branches to restart code that accesses to the designated area of the nonvolatile memory such that when the computer system is again powered on, the restart code accesses the designated area of the nonvolatile memory for the data to restore the computer system to the state before the computer system was powered off.
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