US 6,747,825 B1 · Disc drive with fake defect entries

Abstract

A disc drive includes a base and a disc rotatably attached to the base. The disc drive is formatted by obtaining a list of defective sector entries, determining a first location of selected information based on skipping the defective sectors within the list of defective sector entries, and calculating a second location for selected information. At least one sector to skip is added before the second location of selected information to move the selected information from the first position to the second position. The added sectors may be designated as defective sectors. By adding the at least one sector to skip, the second position of the information is moved or slipped.

Claims19

Dependent claims

A method comprising the steps of:

(a) reading information from a first location on a storage medium to determine a second location on the storage medium;
(b) determining a second physical location, spaced from the first location;
and
(c) formatting the storage medium by providing a selected number of fake defective sectors before the second physical location causing the radial position of the second physical location to slip with respect to the first location so that during a seek from the first physical location to the second physical location, a transducer for reading or writing to the second location arrives just in time to read or write to the second location.

1 more element

Dependencies are inferred from the claim text.

Disc drive with fake defect entries

Life of this patent

Disc drive with fake defect entries

Life of this patent

Abstract

Claims19