| US 7,457,074 B2 | ||
| Method and apparatus for correcting errors while writing spiral servo information in a disk drive | ||
| Hideo Sado, Ome (Japan); Masahide Yatsu, Akishima (Japan); Yuichi Notake, Tokyo (Japan); Seiji Mizukoshi, Nishitama-gun (Japan); Takayuki Matsuzaki, Hamura (Japan); and Takuji Shimada, Ome (Japan) | ||
| Assigned to Kabushiki Kaisha Toshiba, Tokyo (Japan) | ||
| Filed on Mar. 05, 2007, as Appl. No. 11/713,626. | ||
| Claims priority of application No. 2006-078304 (JP), filed on Mar. 22, 2006. | ||
| Prior Publication US 2007/0223131 A1, Sep. 27, 2007 | ||
| Int. Cl. G11B 21/12 (2006.01); G11B 5/09 (2006.01) | ||
| U.S. Cl. 360—75 [360/51] | 18 Claims |
| 1. A method of writing consecutive servo information on a rotating disk medium for a disk drive including a head, the method
comprising:
moving the head in a radial direction substantially at a constant speed from a designated position;
writing the servo information on the disk medium when the head is moved substantially at the constant speed;
detecting a write error while the servo information is being written;
stopping the head moving at the substantially constant speed when the write error is detected and subsequently moving the
head backward to a position from which the head can be moved substantially at the constant speed; and
performing a retry process of writing the servo information from a position where the write error has occurred.
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