Method and apparatus for creating alternate boot environments in a computer
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United States of America Patent
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Jul 13, 1999
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N/A
app pub date -
Jan 3, 1997
filing date -
Jan 3, 1997
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Abstract
The present invention discloses a method, apparatus, and article of manufacture for version migration and fallback of software components in a computer system. The invention creates alternate boot environments that preserve the state of all original software components on a system before performing a software upgrade. The invention virtually eliminates the risks of migrating to upgraded system because users can quickly fall back to a previous operating environment, without extended downtime during and after upgrades.
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