公开(公告)号：FR2308163A1

公开(公告)日：1976-11-12

申请号：FR7605922

申请日：1976-02-25

Applicant: IBM

Inventor： GRIFFITHS DONALD E ,  PUGLIESE CARL F

IPC: G11B21/02 ,  G11B5/55 ,  G11B20/16 ,  G11B25/04

Abstract: A stack of flexible record disks is peripherally accessed following a peripheral identification procedure. A magnetic sensing means disposed in close proximity to the outer circumference of the stack senses a magnetic record track on the respective disk for identifying axial position such that the record surface of a predetermined disk can be accessed. For example, one of a plurality of frequencies particularly identify a disk within a group of disks. A given storage apparatus may have a plurality of such groups.