Method for preventing data loss in a hard disk drive by...

Details Method for preventing data loss in a hard disk drive by... Method for preventing data loss in a hard disk drive by...

2007-06-26

2007-06-26

Sniezek, Andrew L. (Department: 2627)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

C360S075000, C360S031000, C360S077020

Reexamination Certificate

active

11329855

ABSTRACT:
A method for preventing data loss in a hard disk drive by projecting reduction in gas concentration using insitu non-repeatable runout is disclosed. The method includes using servo tracking error to obtain a measured value of insitu non-repeatable runout (NRRO) for the hard disk drive, the hard disk drive having been filled with the gas and hermetically sealed. The measured value of NRRO is then deconvolved into a plurality of values for flow induced NRRO components. These values of NRRO and of flow induced NRRO components are compared to predetermined limiting values and a time when one of the predetermined limiting values will be reached is predicted. Action is then applied as appropriate.

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