Abstract: Technologies are described herein for preventing adjacent track erasure in a storage device using position error signal compensation from a previously written track in a storage device. A first data track is written to a recording medium in the storage device while position error signal information regarding deviations of a read/write head from an ideal center of the first data track are recorded. The recorded position error signal information is then utilized during the writing of a second, adjacent data track to the recording medium to position the read/write head in order to compensate for non-uniformities in the writing of the first data track.

Abstract: Technologies are described herein for preventing adjacent track erasure in a storage device using position error signal compensation from a previously written track in a storage device. A first data track is written to a recording medium in the storage device while position error signal information regarding deviations of a read/write head from an ideal center of the first data track are recorded. The recorded position error signal information is then utilized during the writing of a second, adjacent data track to the recording medium to position the read/write head in order to compensate for non-uniformities in the writing of the first data track.

Abstract: Technologies are described herein for detecting an external magnetic field affecting a magnetic storage device through use of the read/write heads of the device. The magneto-resistive resistance (“MRR”) associated with a pair of read/write heads oriented to read and write opposite recording surfaces of the storage medium. If the change in the MRR associated with the first read/write head is in an inverse direction to the change in MRR associated with the second read/write head and the change in the MRR of either read/write head exceeds a threshold, then all operations of the storage device are halted and the read/write heads are parked.