The action of moving the head of a disk drive to cylinder zero. A read error, transient or otherwise, falling within the capability of an ECC mechanism to correct, or able to overcome by rereading the data in question. The amount of delay in obtaining information from a disk drive attributable to the rotation of the disk. An encoding process that repositions data bits and limits the length of string of zero bits in order to compress information being stored on disks. A recording code.
Various types exist with different efficiencies.
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