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Computing A hard reboot (also known as a cold reboot) is when power to a computer is cycled (turned off and then on) or a special reset signal to the processor is triggered (from a front panel switch of some sort). This restarts the computer without first performing any shut-down procedure. (With many operating systems, especially those using disk caches, after a hard reboot the filesystem may be in an "unclean" state, and an automatic scan of on-disk filesystem structures will be done before normal operation can begin.) It may be caused by power failure, be done by accident, or be done deliberately as a last resort to forcibly retrieve the system from a critical error or virus-inflicted DoS attack. Personal Digital Assistants The term is mistakenly applied to PDA's when "master reset" is the intended meaning. Historically, a hard reboot does not alter any meaningful Non-volatile memory or Secondary storage. This may be accomplished by removing the battery and power from a PDA. A master reset is a full restore of a handheld computer (or PDA) to its factory settings. It entails deleting all information stored in the handheld. This is essentially the same as reformatting a hard drive. A master reset may become necessary from time to time on a PDA which has too many unreliable programs on it, thus restoring integrity to the system. It should be used with caution, as it destroys all data stored in the unit. See also | ||||||||
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