A hard disk drive includes a magnetic recording medium comprising data sectors along a data track, a read head arranged to read data from the data sectors, and an integrated circuit. The integrated circuit includes circuitry programmed to detect a read error associated with a first of the data sectors and continue to read data from the data sectors after the detection of the read error.

A storage device includes a controller that determines a degree of data degradation for a data track targeted by a pending read command and sets a head/media clearance parameter for execution of the read command based on the determined degree of data degradation for the data track, the head/media clearance parameter providing for a greater head-media separation when the determined level of degradation is lower than when the determined level of degradation is higher.

According to one embodiment, a magnetic recording/reproducing apparatus includes irreversible adsorbing materials in a sealed housing for the magnetic recording/reproducing apparatus.

Various circuits, systems, methods, and apparatus are disclosed to provide dynamic direct current (DC) level shifting for use with a summing component of a quad channel detector (QCD) of a media scanning system configured to detect carbon voids or other defects on the surface of a magnetic recording medium. In an example, a summing circuit receives separate input signals from four optical sensors of the scanning system and generates a summed output signal with an alternating current (AC) component representative of a defect and a direct current (DC) component representative of a total power of an optical transmitter of the scanning system. A DC level shifting circuit receives a fixed DC offset signal and the same four variable input signals. The DC level shifting circuit provides dynamic level shifting of the DC component of the summed output signal based on the fixed DC offset and the four input signals.

In an approach to using a cut and paste segment for reading an sHKDS, a request to reposition a tape media in a tape drive is received. Responsive to encountering an error reading an sHKDS while attempting to reposition the tape media, one segment of a plurality of segments from a data set cut and paste error recovery procedure (ERP) is used for an sHKDS cut and paste ERP. Responsive to recovering the sHKDS using the sHKDS cut and paste ERP, the one segment reserved for the sHKDS cut and paste ERP is released to the data set cut and paste ERP.

An electronic communication device includes a controller which controls, according to the number of bit data in which an error has occurred of packet data transferred in serial communication, whether to start logging of information about the error of the packet data or stop logging of information about the error of the packet data.

A set of consecutive user data wedges are each located between consecutive servo wedges of a heat-assisted recording medium. Test data is written at least every other one of the consecutive data wedges using different laser power values. Based on reading the test data, a nominal laser power is selected for use by the read/write head.

An apparatus determines that phase errors have exceeded a threshold when reading data previously recorded to a heat-assisted recording medium. In response to the phase errors exceeding the threshold, remedial action is taken to prevent loss of data due changes in power applied to heat the heat-assisted recording medium when recording.

A disk drive thermal performance testing device includes a drive housing, an electrical connector and an adjustable power loading device. The drive housing is at least partially made of a thermally conductive material. The electrical connector is in the drive housing and provides an external connection. The adjustable power loading device is located in the drive housing, is coupled to the electrical connector, and is thermally coupled to the drive housing.

According to one embodiment, a magnetic disk device includes a disk, a head that writes data to the disk and reads data from the disk, and a controller that executes error correction on a first sector which is unreadable in a first track from an initial reading time of initially one-round reading the first track of the disk based on first parity data corresponding to the first track.