Method for hard disk drive flip disk diagnostics

Details Method for hard disk drive flip disk diagnostics Method for hard disk drive flip disk diagnostics

2006-06-20

2006-06-20

LeDynh, Bot (Department: 2862)

Electricity: measuring and testing

Magnetic

Magnetic information storage element testing

C324S212000, C360S077040

Reexamination Certificate

active

07064539

ABSTRACT:
A method for identifying a problem with a magnetic disk, comprising testing both sides of a disk for read errors using a pair of heads, flipping the disk 180 degrees, again testing both sides of the disk for read errors using the same heads, determining whether one side of the disk has more errors than the other side both before and after the flip, and determining that the disk is the cause of the read errors if the same side of the disk still has more errors than the other side after the flip.

REFERENCES:
patent: 6330129 (2001-12-01), Takekoh et al.
patent: 6504668 (2003-01-01), Takeuchi et al.
patent: 6624963 (2003-09-01), Szita

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