Disk drive adjusting rotational position optimization (RPO) algorithm to compensate for repeatable runout (RRO)

A disk drive is disclosed comprising a first disk surface comprising a plurality of tracks, wherein each track comprises a number of data sectors and a number of servo sectors, and a second disk surface comprising a plurality of tracks, wherein each track comprises a number of data sectors and a num...

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Bibliographische Detailangaben
Hauptverfasser:	COKER KENNY T, WILSON REBEKAH A
Format:	Patent
Sprache:	eng
Schlagworte:	INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER PHYSICS
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Beschreibung
Zusammenfassung:	A disk drive is disclosed comprising a first disk surface comprising a plurality of tracks, wherein each track comprises a number of data sectors and a number of servo sectors, and a second disk surface comprising a plurality of tracks, wherein each track comprises a number of data sectors and a number of servo sectors. A first repeatable runout (RRO) sinusoid is generated representing an RRO of the first disk surface, and a second RRO sinusoid is generated representing an RRO of the second disk surface. A plurality of access commands are received from a host which are stored in a command queue, and one of the access commands is selected to execute in response to the first and second RRO sinusoids.