公开(公告)号：DE2615245A1

公开(公告)日：1976-10-28

申请号：DE2615245

申请日：1976-04-08

Applicant: IBM

Inventor： GRIFFITHS DONALD ERIC ,  PUGLIESE CARL FRANCIS

IPC: G11B21/02 ,  G11B5/55 ,  G11B20/16 ,  G11B23/30 ,  G11B5/54 ,  G11B5/016 ,  G06F7/10

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.