A data storage device is disclosed comprising a non-energy assist (NEA) head configured to access a first disk surface, and an energy assist (EA) head configured to access a second disk surface. The data storage device further comprises control circuitry configured to write data to the first disk surface, and migrate at least part of the data to the second disk surface.

A computer implemented method includes obtaining positional information corresponding to end of data (EOD) on a tape and a data extent stored in the tape, wherein the positional information includes longitudinal position (LPOS), latitudinal position (wrap), and number of data blocks, comparing a block number of at least one of a currently read or located data with the positional information of the data extent to identify a current position of a tape head, identifying a positional relationship between a location of data to be read, the positional information of the EOD on the tape, and the current position of the tape head, identifying a directional relationship between a current direction of the tape head locating to data to be read and a pending write direction, and determining an appendable range for data after the EOD on the tape based on the identified positional relationship and the identified directional relationship.

Provided are a method and terminal device for installing an operating system. The method includes: copying an installation boot file in a mirror file of a to-be-installed-operating system into a root directory of a removable storage device attached to the terminal device, the mirror file being stored in the removable storage device; creating an installation script file where a pre-installation script indicates the mirror file is to be mounted to a first folder of the terminal device; designating in the installation script file that a storage address of software installation packages is that of the first folder; adding the installation script file to the mirror file and copying the updated mirror file into a hard disk, where the operating system is to be installed, in the terminal device to obtain a startup disk; and installing the operating system in the hard disk with the startup disk and installation boot file.

Provided are a method and terminal device for installing an operating system. The method includes: copying an installation boot file in a mirror file of a to-be-installed-operating system into a root directory of a removable storage device attached to the terminal device, the mirror file being stored in the removable storage device; creating an installation script file where a pre-installation script indicates the mirror file is to be mounted to a first folder of the terminal device; designating in the installation script file that a storage address of software installation packages is that of the first folder; adding the installation script file to the mirror file and copying the updated mirror file into a hard disk, where the operating system is to be installed, in the terminal device to obtain a startup disk; and installing the operating system in the hard disk with the startup disk and installation boot file.

A data recording apparatus including: a data reading device configured to read data from a first recording medium and configured to store data and first management data for managing the data by file; a data recording device configured to record data on a second recording medium; a management data producing device configured to produce second management data for managing data recorded on the second recording medium based on the first management data of the first recording medium on which the data recorded on the second recording medium has been recorded; a data determining device configured to determine data unrecorded on the second recording medium by comparing the first management data read by the data reading device from the first recording medium with the second management data recorded on the second recording medium; a control device configured to read the data determined by the data determining device from the first recording medium and cause the recording device to record the read data onto the second recording medium; and a display device configured to display the recording status of data, managed by the first management data read by the reading device from the first recording medium, on the second recording medium, wherein the recording status includes one of recording of data complete, recording of data in progress, and recording of data yet to begin.

A data recording apparatus including: a data reading device configured to read data from a first recording medium and configured to store data and first management data for managing the data by file; a data recording device configured to record data on a second recording medium; a management data producing device configured to produce second management data for managing data recorded on the second recording medium based on the first management data of the first recording medium on which the data recorded on the second recording medium has been recorded; a data determining device configured to determine data unrecorded on the second recording medium by comparing the first management data read by the data reading device from the first recording medium with the second management data recorded on the second recording medium; a control device configured to read the data determined by the data determining device from the first recording medium and cause the recording device to record the read data onto the second recording medium; and a display device configured to display the recording status of data, managed by the first management data read by the reading device from the first recording medium, on the second recording medium, wherein the recording status includes one of recording of data complete, recording of data in progress, and recording of data yet to begin.

A plurality of kinds of LPCM signals/compression digital audio signals is switched to one another in transmission, thereby enabling audio reproduction to be satisfactorily carried out. A digital audio signal is transmitted to an external apparatus through a predetermined transmission path. Information associated with the digital audio signal to be next transmitted is added to the digital audio signal which is currently being transmitted. For example, first metadata exhibiting a transmission frequency of the digital audio signal, and second metadata exhibiting a data type of the digital audio signal are contained in the information.

Methods and systems for detecting hidden sectors in a hard drive. The method may include initiating a linear copy of the hard drive and, while the hard drive is being copied, capturing images of a platter and an actuator arm within the hard drive using an imaging device. The captured images are output and they indicate a range of movement of the actuator arm across the platter during the linear copy. Ranges of movement that fail to scan across the full expected size of the platter may be indicative of a modified partition record that maliciously hides a portion of the hard drive from the copy operation.

A data transferring device and a data transfer method. The data transferring device for transferring an audio-visual stream stored in a first medium to a second medium, includes: a reader comprising reading circuitry configured to read the audio-visual stream from the first medium; and a controller configured to: extract an audio packet and a video packet from the audio-visual stream; write the audio packet and video packet to the second medium; and store, in a memory, first location information indicating locations at which the audio packet and the video packet are written in the second medium, and second location information indicating locations at which the audio packet and the video packet are read from the first medium.

Disclosed are a mobile terminal of a watch type and controlling method thereof. The present invention includes a display unit, a sensing unit, a communication unit configured to transmit/receive a signal with a vehicle accident recording device, and a controller controlling the display unit, the sensing unit and the communication unit, wherein if a state change of a user is sensed, an image request signal for requesting an image is transmitted to the vehicle accident recording device, wherein the image corresponds to at least one of a moving image and a still image corresponding to a first time point of sensing the state change, and wherein if the image is received from the vehicle accident recording device, a notification indicating that the image is received is provided. Accordingly, a photographed image is received from a vehicle accident recording device in case of sensing user's state change.