According to one embodiment, a magnetic disk device includes a disk, a head including a write head configured to write data on the disk, a first read head, and a second read head each configured to read data from the disk, and a controller configured to detect a first error of each track pitch corresponding to each track of the disk on the basis of a first gap in a radial direction between the first read head and the second read head at each position in the radial direction of the disk, write a servo pattern on the disk on the basis of a first correction value used to correct the first error, and position the head on the basis of the servo pattern.

According to one embodiment, a magnetic disk device includes a disk, a head including a write head configured to write data on the disk, a first read head, and a second read head each configured to read data from the disk, and a controller configured to detect a first error of each track pitch corresponding to each track of the disk on the basis of a first gap in a radial direction between the first read head and the second read head at each position in the radial direction of the disk, write a servo pattern on the disk on the basis of a first correction value used to correct the first error, and position the head on the basis of the servo pattern.

According to one embodiment, a magnetic disk device includes a disk, a head including a write head configured to write data on the disk, a first read head, and a second read head each configured to read data from the disk, and a controller configured to detect a first error of each track pitch corresponding to each track of the disk on the basis of a first gap in a radial direction between the first read head and the second read head at each position in the radial direction of the disk, write a servo pattern on the disk on the basis of a first correction value used to correct the first error, and position the head on the basis of the servo pattern.

According to one embodiment, a magnetic disk device includes a disk, a head including a write head configured to write data on the disk, a first read head, and a second read head each configured to read data from the disk, and a controller configured to detect a first error of each track pitch corresponding to each track of the disk on the basis of a first gap in a radial direction between the first read head and the second read head at each position in the radial direction of the disk, write a servo pattern on the disk on the basis of a first correction value used to correct the first error, and position the head on the basis of the servo pattern.

Phonograph record turntable stabilizing assemblies are provided that can include: a vessel having outer sidewalls; an opening within the vessel configured to receive the center spindle of the turntable; and a plurality of flowable solid particles to be received within the vessel. Phonograph record turntable stabilizing kits are provided. These kits can include: a vessel; an opening within the vessel configured to receive the center spindle of the turntable; and a plurality of flowable solid particles. Phonograph turntable assemblies are provided that can include: a phonograph turntable having a record thereon; a vessel upon the record; an opening within the vessel configured to receive the center spindle of the turntable; and a plurality of flowable solid particles within the vessel. Methods for stabilizing a record upon a turntable are provided. The methods can include: placing a vessel upon a record on a turntable; and at least partially filling the vessel with flowable solid particles.

Phonograph record turntable stabilizing assemblies are provided that can include: a vessel having outer sidewalls; an opening within the vessel configured to receive the center spindle of the turntable; and a plurality of flowable solid particles to be received within the vessel. Phonograph record turntable stabilizing kits are provided. These kits can include: a vessel; an opening within the vessel configured to receive the center spindle of the turntable; and a plurality of flowable solid particles. Phonograph turntable assemblies are provided that can include: a phonograph turntable having a record thereon; a vessel upon the record; an opening within the vessel configured to receive the center spindle of the turntable; and a plurality of flowable solid particles within the vessel. Methods for stabilizing a record upon a turntable are provided. The methods can include: placing a vessel upon a record on a turntable; and at least partially filling the vessel with flowable solid particles.