Definition: Programmed I/O


In a disk drive with an AT interface, data transfers between the drive and host using programmed I/O (PIO). The host uses PIO to write to the Command Block Registers (CBRs) when transmitting control information, such as the location of a read command.




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Data Recovery Fact

Overwritten data

This refers to data, which has been physically overwritten by other data. Data that is physically overwritten by other data cannot be recovered.

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