Methods and devices for preventing potential media errors from growing thermal asperities
US8694841B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 20, 2012 |
| Grant date | Apr 8, 2014 |
| Priority date | — |
| Expiry date | Jun 20, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/6076
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method to enable defect margining of a disk drive may comprise executing a data access command on a target sector on the disk drive. Upon encountering a data access error at the target sector, an address of the target sector may be added to an error list. The address of the target sector in the error list may then be converted to a physical location on the disk drive. A thermal asperity scan may be performed at and around the physical location and, upon detecting a thermal asperity, and at least sectors around the detected thermal asperity may be margined, and the data stored within the margined sectors may be relocated. Instead of sectors, entire tracks may be margined and the data stored therein relocated to a spare or reserve location, one track at a time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.