head crash

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Noun1.head crash - (computer science) a crash of a read/write head in a hard disk drive (usually caused by contact of the head with the surface of the magnetic disk)
computer science, computing - the branch of engineering science that studies (with the aid of computers) computable processes and structures
crash - (computer science) an event that causes a computer system to become inoperative; "the crash occurred during a thunderstorm and the system has been down ever since"
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Recently a veteran told me of what it is like to sit on the subway looking like everyone else while the traumatic images cycling through his head crash through his mind.
IPStor BareMetal Recovery minimizes server and desktop downtime by providing an IP-based boot service that continues operations in the event of a boot disk failure from a head crash, virus infection, or data corruption.
Hard disk data can be partially saved, even after a head crash.