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US07340638B2 Operating system update and boot failure recovery 有权
操作系统更新和引导失败恢复

Operating system update and boot failure recovery
摘要:
An improved operating system method that, in addition to the primary operating system, stores one or more alternate or recovery operating systems. The system monitors the operation of the present operating system and accesses the alternate or recovery operating system based on a fail-over algorithm when a fault condition is detected. The alternate or recovery operating systems are periodically updated.
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